Home / 747,739.90-1,121,609.85-432,811.90

Finding the Fourth Proportional to 747,739.90, 1,121,609.85 and 432,811.90

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Solution

The fourth proportional to 747,739.90, 1,121,609.85 and 432,811.90 is: 649,217.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,739.90 : 1,121,609.85 = 432,811.90 : x
  2. Step 2: Convert to fraction form
    747,739.90/1,121,609.85 = 432,811.90/x
  3. Step 3: Cross multiply
    747,739.90x = 1,121,609.85 × 432,811.90
  4. Step 4: Simplify right side
    747,739.90x = 485,446,090,237.22
  5. Step 5: Solve for x
    x = 485,446,090,237.22/747,739.90
  6. Step 6: Final answer
    x = 649,217.85

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1.5x scale

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.