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Finding the Fourth Proportional to 718,252.72, 991,188.80 and 412,348.93

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Solution

The fourth proportional to 718,252.72, 991,188.80 and 412,348.93 is: 569,041.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,252.72 : 991,188.80 = 412,348.93 : x
  2. Step 2: Convert to fraction form
    718,252.72/991,188.80 = 412,348.93/x
  3. Step 3: Cross multiply
    718,252.72x = 991,188.80 × 412,348.93
  4. Step 4: Simplify right side
    718,252.72x = 408,715,638,114.58
  5. Step 5: Solve for x
    x = 408,715,638,114.58/718,252.72
  6. Step 6: Final answer
    x = 569,041.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.