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Finding the Fourth Proportional to 604,906.60, 907,359.90 and 394,781.80

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Solution

The fourth proportional to 604,906.60, 907,359.90 and 394,781.80 is: 592,172.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,906.60 : 907,359.90 = 394,781.80 : x
  2. Step 2: Convert to fraction form
    604,906.60/907,359.90 = 394,781.80/x
  3. Step 3: Cross multiply
    604,906.60x = 907,359.90 × 394,781.80
  4. Step 4: Simplify right side
    604,906.60x = 358,209,174,569.82
  5. Step 5: Solve for x
    x = 358,209,174,569.82/604,906.60
  6. Step 6: Final answer
    x = 592,172.70

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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.