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Finding the Fourth Proportional to 675,960.60, 932,870.28 and 389,498.76

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Solution

The fourth proportional to 675,960.60, 932,870.28 and 389,498.76 is: 537,534.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,960.60 : 932,870.28 = 389,498.76 : x
  2. Step 2: Convert to fraction form
    675,960.60/932,870.28 = 389,498.76/x
  3. Step 3: Cross multiply
    675,960.60x = 932,870.28 × 389,498.76
  4. Step 4: Simplify right side
    675,960.60x = 363,351,817,300.85
  5. Step 5: Solve for x
    x = 363,351,817,300.85/675,960.60
  6. Step 6: Final answer
    x = 537,534.02

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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.