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Finding the Fourth Proportional to 628,308.80, 935,356.42 and 624,572.06

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Solution

The fourth proportional to 628,308.80, 935,356.42 and 624,572.06 is: 929,793.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,308.80 : 935,356.42 = 624,572.06 : x
  2. Step 2: Convert to fraction form
    628,308.80/935,356.42 = 624,572.06/x
  3. Step 3: Cross multiply
    628,308.80x = 935,356.42 × 624,572.06
  4. Step 4: Simplify right side
    628,308.80x = 584,197,486,073.63
  5. Step 5: Solve for x
    x = 584,197,486,073.63/628,308.80
  6. Step 6: Final answer
    x = 929,793.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.