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Finding the Fourth Proportional to 604,938.60, 907,407.90 and 394,813.80

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Solution

The fourth proportional to 604,938.60, 907,407.90 and 394,813.80 is: 592,220.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,938.60 : 907,407.90 = 394,813.80 : x
  2. Step 2: Convert to fraction form
    604,938.60/907,407.90 = 394,813.80/x
  3. Step 3: Cross multiply
    604,938.60x = 907,407.90 × 394,813.80
  4. Step 4: Simplify right side
    604,938.60x = 358,257,161,149.02
  5. Step 5: Solve for x
    x = 358,257,161,149.02/604,938.60
  6. Step 6: Final answer
    x = 592,220.70

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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.