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Finding the Fourth Proportional to 675,881.42, 932,711.76 and 389,395.35

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Solution

The fourth proportional to 675,881.42, 932,711.76 and 389,395.35 is: 537,362.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,881.42 : 932,711.76 = 389,395.35 : x
  2. Step 2: Convert to fraction form
    675,881.42/932,711.76 = 389,395.35/x
  3. Step 3: Cross multiply
    675,881.42x = 932,711.76 × 389,395.35
  4. Step 4: Simplify right side
    675,881.42x = 363,193,622,234.32
  5. Step 5: Solve for x
    x = 363,193,622,234.32/675,881.42
  6. Step 6: Final answer
    x = 537,362.94

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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.