Home / 981,330,336.80-1,471,995,505.20-654,812,986.40

Finding the Fourth Proportional to 981,330,336.80, 1,471,995,505.20 and 654,812,986.40

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Solution

The fourth proportional to 981,330,336.80, 1,471,995,505.20 and 654,812,986.40 is: 982,219,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,330,336.80 : 1,471,995,505.20 = 654,812,986.40 : x
  2. Step 2: Convert to fraction form
    981,330,336.80/1,471,995,505.20 = 654,812,986.40/x
  3. Step 3: Cross multiply
    981,330,336.80x = 1,471,995,505.20 × 654,812,986.40
  4. Step 4: Simplify right side
    981,330,336.80x = 963,881,772,727,388,672
  5. Step 5: Solve for x
    x = 963,881,772,727,388,672/981,330,336.80
  6. Step 6: Final answer
    x = 982,219,479.60

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Double scale
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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.