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Finding the Fourth Proportional to 607,781.60, 912,493.20 and 355,320.80

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Solution

The fourth proportional to 607,781.60, 912,493.20 and 355,320.80 is: 533,461.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,781.60 : 912,493.20 = 355,320.80 : x
  2. Step 2: Convert to fraction form
    607,781.60/912,493.20 = 355,320.80/x
  3. Step 3: Cross multiply
    607,781.60x = 912,493.20 × 355,320.80
  4. Step 4: Simplify right side
    607,781.60x = 324,227,813,818.56
  5. Step 5: Solve for x
    x = 324,227,813,818.56/607,781.60
  6. Step 6: Final answer
    x = 533,461.06

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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.