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Finding the Fourth Proportional to 604,931.70, 907,397.55 and 339,211.20

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Solution

The fourth proportional to 604,931.70, 907,397.55 and 339,211.20 is: 508,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,931.70 : 907,397.55 = 339,211.20 : x
  2. Step 2: Convert to fraction form
    604,931.70/907,397.55 = 339,211.20/x
  3. Step 3: Cross multiply
    604,931.70x = 907,397.55 × 339,211.20
  4. Step 4: Simplify right side
    604,931.70x = 307,799,411,812.56
  5. Step 5: Solve for x
    x = 307,799,411,812.56/604,931.70
  6. Step 6: Final answer
    x = 508,816.80

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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.