Home / 730,454.64-1,008,127.53-420,350.85

Finding the Fourth Proportional to 730,454.64, 1,008,127.53 and 420,350.85

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Solution

The fourth proportional to 730,454.64, 1,008,127.53 and 420,350.85 is: 580,141.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,454.64 : 1,008,127.53 = 420,350.85 : x
  2. Step 2: Convert to fraction form
    730,454.64/1,008,127.53 = 420,350.85/x
  3. Step 3: Cross multiply
    730,454.64x = 1,008,127.53 × 420,350.85
  4. Step 4: Simplify right side
    730,454.64x = 423,767,264,143.90
  5. Step 5: Solve for x
    x = 423,767,264,143.90/730,454.64
  6. Step 6: Final answer
    x = 580,141.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.