Home / 753,721.20-1,130,581.80-434,856.60

Finding the Fourth Proportional to 753,721.20, 1,130,581.80 and 434,856.60

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Solution

The fourth proportional to 753,721.20, 1,130,581.80 and 434,856.60 is: 652,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,721.20 : 1,130,581.80 = 434,856.60 : x
  2. Step 2: Convert to fraction form
    753,721.20/1,130,581.80 = 434,856.60/x
  3. Step 3: Cross multiply
    753,721.20x = 1,130,581.80 × 434,856.60
  4. Step 4: Simplify right side
    753,721.20x = 491,640,957,569.88
  5. Step 5: Solve for x
    x = 491,640,957,569.88/753,721.20
  6. Step 6: Final answer
    x = 652,284.90

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Double scale
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Similar ratio
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1.5x scale

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.