Home / 665,981,941.40-998,972,912.10-655,778,274.20

Finding the Fourth Proportional to 665,981,941.40, 998,972,912.10 and 655,778,274.20

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Solution

The fourth proportional to 665,981,941.40, 998,972,912.10 and 655,778,274.20 is: 983,667,411.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,981,941.40 : 998,972,912.10 = 655,778,274.20 : x
  2. Step 2: Convert to fraction form
    665,981,941.40/998,972,912.10 = 655,778,274.20/x
  3. Step 3: Cross multiply
    665,981,941.40x = 998,972,912.10 × 655,778,274.20
  4. Step 4: Simplify right side
    665,981,941.40x = 655,104,732,269,486,336
  5. Step 5: Solve for x
    x = 655,104,732,269,486,336/665,981,941.40
  6. Step 6: Final answer
    x = 983,667,411.30

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Half scale
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Double scale
Find fourth proportional to 665,981,942.40, 998,972,913.60 and 655,778,275.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.