Home / 726,742.10-1,090,761.15-426,847.70

Finding the Fourth Proportional to 726,742.10, 1,090,761.15 and 426,847.70

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Solution

The fourth proportional to 726,742.10, 1,090,761.15 and 426,847.70 is: 640,652.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,742.10 : 1,090,761.15 = 426,847.70 : x
  2. Step 2: Convert to fraction form
    726,742.10/1,090,761.15 = 426,847.70/x
  3. Step 3: Cross multiply
    726,742.10x = 1,090,761.15 × 426,847.70
  4. Step 4: Simplify right side
    726,742.10x = 465,588,888,126.86
  5. Step 5: Solve for x
    x = 465,588,888,126.86/726,742.10
  6. Step 6: Final answer
    x = 640,652.15

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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.