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Finding the Fourth Proportional to 579,010.40, 866,672.40 and 413,122.40

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Solution

The fourth proportional to 579,010.40, 866,672.40 and 413,122.40 is: 618,368.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,010.40 : 866,672.40 = 413,122.40 : x
  2. Step 2: Convert to fraction form
    579,010.40/866,672.40 = 413,122.40/x
  3. Step 3: Cross multiply
    579,010.40x = 866,672.40 × 413,122.40
  4. Step 4: Simplify right side
    579,010.40x = 358,041,781,901.76
  5. Step 5: Solve for x
    x = 358,041,781,901.76/579,010.40
  6. Step 6: Final answer
    x = 618,368.48

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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.