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Finding the Fourth Proportional to 604,903.60, 907,355.40 and 394,778.80

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Solution

The fourth proportional to 604,903.60, 907,355.40 and 394,778.80 is: 592,168.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,903.60 : 907,355.40 = 394,778.80 : x
  2. Step 2: Convert to fraction form
    604,903.60/907,355.40 = 394,778.80/x
  3. Step 3: Cross multiply
    604,903.60x = 907,355.40 × 394,778.80
  4. Step 4: Simplify right side
    604,903.60x = 358,204,675,985.52
  5. Step 5: Solve for x
    x = 358,204,675,985.52/604,903.60
  6. Step 6: Final answer
    x = 592,168.20

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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.