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Finding the Fourth Proportional to 576,039.70, 864,059.55 and 387,082.90

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Solution

The fourth proportional to 576,039.70, 864,059.55 and 387,082.90 is: 580,624.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,039.70 : 864,059.55 = 387,082.90 : x
  2. Step 2: Convert to fraction form
    576,039.70/864,059.55 = 387,082.90/x
  3. Step 3: Cross multiply
    576,039.70x = 864,059.55 × 387,082.90
  4. Step 4: Simplify right side
    576,039.70x = 334,462,676,386.70
  5. Step 5: Solve for x
    x = 334,462,676,386.70/576,039.70
  6. Step 6: Final answer
    x = 580,624.35

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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.