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Finding the Fourth Proportional to 813,893.80, 1,123,036.58 and 542,367.08

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Solution

The fourth proportional to 813,893.80, 1,123,036.58 and 542,367.08 is: 748,375.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,893.80 : 1,123,036.58 = 542,367.08 : x
  2. Step 2: Convert to fraction form
    813,893.80/1,123,036.58 = 542,367.08/x
  3. Step 3: Cross multiply
    813,893.80x = 1,123,036.58 × 542,367.08
  4. Step 4: Simplify right side
    813,893.80x = 609,098,070,627.79
  5. Step 5: Solve for x
    x = 609,098,070,627.79/813,893.80
  6. Step 6: Final answer
    x = 748,375.37

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1.5x scale

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.