Home / 865,721.20-1,298,581.80-546,856.60

Finding the Fourth Proportional to 865,721.20, 1,298,581.80 and 546,856.60

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Solution

The fourth proportional to 865,721.20, 1,298,581.80 and 546,856.60 is: 820,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,721.20 : 1,298,581.80 = 546,856.60 : x
  2. Step 2: Convert to fraction form
    865,721.20/1,298,581.80 = 546,856.60/x
  3. Step 3: Cross multiply
    865,721.20x = 1,298,581.80 × 546,856.60
  4. Step 4: Simplify right side
    865,721.20x = 710,138,027,969.88
  5. Step 5: Solve for x
    x = 710,138,027,969.88/865,721.20
  6. Step 6: Final answer
    x = 820,284.90

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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.