Home / 865,928.25-1,194,929.49-478,720.47

Finding the Fourth Proportional to 865,928.25, 1,194,929.49 and 478,720.47

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Solution

The fourth proportional to 865,928.25, 1,194,929.49 and 478,720.47 is: 660,605.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,928.25 : 1,194,929.49 = 478,720.47 : x
  2. Step 2: Convert to fraction form
    865,928.25/1,194,929.49 = 478,720.47/x
  3. Step 3: Cross multiply
    865,928.25x = 1,194,929.49 × 478,720.47
  4. Step 4: Simplify right side
    865,928.25x = 572,037,207,069.66
  5. Step 5: Solve for x
    x = 572,037,207,069.66/865,928.25
  6. Step 6: Final answer
    x = 660,605.78

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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.