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Finding the Fourth Proportional to 675,954.60, 932,862 and 389,492.76

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Solution

The fourth proportional to 675,954.60, 932,862 and 389,492.76 is: 537,525.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,954.60 : 932,862 = 389,492.76 : x
  2. Step 2: Convert to fraction form
    675,954.60/932,862 = 389,492.76/x
  3. Step 3: Cross multiply
    675,954.60x = 932,862 × 389,492.76
  4. Step 4: Simplify right side
    675,954.60x = 363,342,995,079.12
  5. Step 5: Solve for x
    x = 363,342,995,079.12/675,954.60
  6. Step 6: Final answer
    x = 537,525.74

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1.5x scale

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.