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Finding the Fourth Proportional to 576,529.72, 865,326.21 and 292,419.70

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Solution

The fourth proportional to 576,529.72, 865,326.21 and 292,419.70 is: 438,899.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,529.72 : 865,326.21 = 292,419.70 : x
  2. Step 2: Convert to fraction form
    576,529.72/865,326.21 = 292,419.70/x
  3. Step 3: Cross multiply
    576,529.72x = 865,326.21 × 292,419.70
  4. Step 4: Simplify right side
    576,529.72x = 253,038,430,730.34
  5. Step 5: Solve for x
    x = 253,038,430,730.34/576,529.72
  6. Step 6: Final answer
    x = 438,899.20

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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.