Home / 730,456.64-1,008,130.29-420,352.85

Finding the Fourth Proportional to 730,456.64, 1,008,130.29 and 420,352.85

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Solution

The fourth proportional to 730,456.64, 1,008,130.29 and 420,352.85 is: 580,144.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,456.64 : 1,008,130.29 = 420,352.85 : x
  2. Step 2: Convert to fraction form
    730,456.64/1,008,130.29 = 420,352.85/x
  3. Step 3: Cross multiply
    730,456.64x = 1,008,130.29 × 420,352.85
  4. Step 4: Simplify right side
    730,456.64x = 423,770,440,572.83
  5. Step 5: Solve for x
    x = 423,770,440,572.83/730,456.64
  6. Step 6: Final answer
    x = 580,144.55

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Double scale
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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.