Home / 642,454.09-886,681.07-370,468.86

Finding the Fourth Proportional to 642,454.09, 886,681.07 and 370,468.86

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Solution

The fourth proportional to 642,454.09, 886,681.07 and 370,468.86 is: 511,301.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,454.09 : 886,681.07 = 370,468.86 : x
  2. Step 2: Convert to fraction form
    642,454.09/886,681.07 = 370,468.86/x
  3. Step 3: Cross multiply
    642,454.09x = 886,681.07 × 370,468.86
  4. Step 4: Simplify right side
    642,454.09x = 328,487,728,358.74
  5. Step 5: Solve for x
    x = 328,487,728,358.74/642,454.09
  6. Step 6: Final answer
    x = 511,301.48

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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.