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Finding the Fourth Proportional to 576,574.50, 864,864.82 and 378,151.40

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Solution

The fourth proportional to 576,574.50, 864,864.82 and 378,151.40 is: 567,229.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,574.50 : 864,864.82 = 378,151.40 : x
  2. Step 2: Convert to fraction form
    576,574.50/864,864.82 = 378,151.40/x
  3. Step 3: Cross multiply
    576,574.50x = 864,864.82 × 378,151.40
  4. Step 4: Simplify right side
    576,574.50x = 327,049,845,128.60
  5. Step 5: Solve for x
    x = 327,049,845,128.60/576,574.50
  6. Step 6: Final answer
    x = 567,229.12

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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.