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Finding the Fourth Proportional to 658,266.90, 987,400.35 and 606,426.90

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Solution

The fourth proportional to 658,266.90, 987,400.35 and 606,426.90 is: 909,640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,266.90 : 987,400.35 = 606,426.90 : x
  2. Step 2: Convert to fraction form
    658,266.90/987,400.35 = 606,426.90/x
  3. Step 3: Cross multiply
    658,266.90x = 987,400.35 × 606,426.90
  4. Step 4: Simplify right side
    658,266.90x = 598,786,133,309.42
  5. Step 5: Solve for x
    x = 598,786,133,309.42/658,266.90
  6. Step 6: Final answer
    x = 909,640.35

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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.