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Finding the Fourth Proportional to 626,775.53, 940,052.13 and 285,139.58

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Solution

The fourth proportional to 626,775.53, 940,052.13 and 285,139.58 is: 427,658.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,775.53 : 940,052.13 = 285,139.58 : x
  2. Step 2: Convert to fraction form
    626,775.53/940,052.13 = 285,139.58/x
  3. Step 3: Cross multiply
    626,775.53x = 940,052.13 × 285,139.58
  4. Step 4: Simplify right side
    626,775.53x = 268,046,069,526.31
  5. Step 5: Solve for x
    x = 268,046,069,526.31/626,775.53
  6. Step 6: Final answer
    x = 427,658.80

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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.