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Finding the Fourth Proportional to 663,770.40, 993,031.20 and 575,998.80

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Solution

The fourth proportional to 663,770.40, 993,031.20 and 575,998.80 is: 861,720.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,770.40 : 993,031.20 = 575,998.80 : x
  2. Step 2: Convert to fraction form
    663,770.40/993,031.20 = 575,998.80/x
  3. Step 3: Cross multiply
    663,770.40x = 993,031.20 × 575,998.80
  4. Step 4: Simplify right side
    663,770.40x = 571,984,779,562.56
  5. Step 5: Solve for x
    x = 571,984,779,562.56/663,770.40
  6. Step 6: Final answer
    x = 861,720.83

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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.