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Finding the Fourth Proportional to 521,746.67, 781,600.77 and 359,611.90

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Solution

The fourth proportional to 521,746.67, 781,600.77 and 359,611.90 is: 538,715.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,746.67 : 781,600.77 = 359,611.90 : x
  2. Step 2: Convert to fraction form
    521,746.67/781,600.77 = 359,611.90/x
  3. Step 3: Cross multiply
    521,746.67x = 781,600.77 × 359,611.90
  4. Step 4: Simplify right side
    521,746.67x = 281,072,939,372.26
  5. Step 5: Solve for x
    x = 281,072,939,372.26/521,746.67
  6. Step 6: Final answer
    x = 538,715.35

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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.