Home / 484,743.40-727,115.10-129,812.20

Finding the Fourth Proportional to 484,743.40, 727,115.10 and 129,812.20

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Solution

The fourth proportional to 484,743.40, 727,115.10 and 129,812.20 is: 194,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,743.40 : 727,115.10 = 129,812.20 : x
  2. Step 2: Convert to fraction form
    484,743.40/727,115.10 = 129,812.20/x
  3. Step 3: Cross multiply
    484,743.40x = 727,115.10 × 129,812.20
  4. Step 4: Simplify right side
    484,743.40x = 94,388,410,784.22
  5. Step 5: Solve for x
    x = 94,388,410,784.22/484,743.40
  6. Step 6: Final answer
    x = 194,718.30

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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.