Home / 486,055.20-729,082.80-385,671.90

Finding the Fourth Proportional to 486,055.20, 729,082.80 and 385,671.90

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Solution

The fourth proportional to 486,055.20, 729,082.80 and 385,671.90 is: 578,507.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,055.20 : 729,082.80 = 385,671.90 : x
  2. Step 2: Convert to fraction form
    486,055.20/729,082.80 = 385,671.90/x
  3. Step 3: Cross multiply
    486,055.20x = 729,082.80 × 385,671.90
  4. Step 4: Simplify right side
    486,055.20x = 281,186,748,733.32
  5. Step 5: Solve for x
    x = 281,186,748,733.32/486,055.20
  6. Step 6: Final answer
    x = 578,507.85

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Similar ratio
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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.