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Finding the Fourth Proportional to 576,064.20, 864,096.30 and 387,107.40

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Solution

The fourth proportional to 576,064.20, 864,096.30 and 387,107.40 is: 580,661.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,064.20 : 864,096.30 = 387,107.40 : x
  2. Step 2: Convert to fraction form
    576,064.20/864,096.30 = 387,107.40/x
  3. Step 3: Cross multiply
    576,064.20x = 864,096.30 × 387,107.40
  4. Step 4: Simplify right side
    576,064.20x = 334,498,072,042.62
  5. Step 5: Solve for x
    x = 334,498,072,042.62/576,064.20
  6. Step 6: Final answer
    x = 580,661.10

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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.