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Finding the Fourth Proportional to 576,726.08, 863,929.12 and 287,666.24

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Solution

The fourth proportional to 576,726.08, 863,929.12 and 287,666.24 is: 430,920.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,726.08 : 863,929.12 = 287,666.24 : x
  2. Step 2: Convert to fraction form
    576,726.08/863,929.12 = 287,666.24/x
  3. Step 3: Cross multiply
    576,726.08x = 863,929.12 × 287,666.24
  4. Step 4: Simplify right side
    576,726.08x = 248,523,241,576.91
  5. Step 5: Solve for x
    x = 248,523,241,576.91/576,726.08
  6. Step 6: Final answer
    x = 430,920.76

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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.