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Finding the Fourth Proportional to 679,068.83, 937,060.13 and 392,607.38

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Solution

The fourth proportional to 679,068.83, 937,060.13 and 392,607.38 is: 541,766.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,068.83 : 937,060.13 = 392,607.38 : x
  2. Step 2: Convert to fraction form
    679,068.83/937,060.13 = 392,607.38/x
  3. Step 3: Cross multiply
    679,068.83x = 937,060.13 × 392,607.38
  4. Step 4: Simplify right side
    679,068.83x = 367,896,715,893.42
  5. Step 5: Solve for x
    x = 367,896,715,893.42/679,068.83
  6. Step 6: Final answer
    x = 541,766.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.