Home / 485,322.30-727,983.45-434,000.70

Finding the Fourth Proportional to 485,322.30, 727,983.45 and 434,000.70

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Solution

The fourth proportional to 485,322.30, 727,983.45 and 434,000.70 is: 651,001.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,322.30 : 727,983.45 = 434,000.70 : x
  2. Step 2: Convert to fraction form
    485,322.30/727,983.45 = 434,000.70/x
  3. Step 3: Cross multiply
    485,322.30x = 727,983.45 × 434,000.70
  4. Step 4: Simplify right side
    485,322.30x = 315,945,326,888.42
  5. Step 5: Solve for x
    x = 315,945,326,888.42/485,322.30
  6. Step 6: Final answer
    x = 651,001.05

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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.