Home / 749,765.10-1,123,286.85-433,281.90

Finding the Fourth Proportional to 749,765.10, 1,123,286.85 and 433,281.90

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Solution

The fourth proportional to 749,765.10, 1,123,286.85 and 433,281.90 is: 649,136.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,765.10 : 1,123,286.85 = 433,281.90 : x
  2. Step 2: Convert to fraction form
    749,765.10/1,123,286.85 = 433,281.90/x
  3. Step 3: Cross multiply
    749,765.10x = 1,123,286.85 × 433,281.90
  4. Step 4: Simplify right side
    749,765.10x = 486,699,860,613.02
  5. Step 5: Solve for x
    x = 486,699,860,613.02/749,765.10
  6. Step 6: Final answer
    x = 649,136.46

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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.