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Finding the Fourth Proportional to 658,012.46, 987,332.45 and 358,486.43

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Solution

The fourth proportional to 658,012.46, 987,332.45 and 358,486.43 is: 537,900.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,012.46 : 987,332.45 = 358,486.43 : x
  2. Step 2: Convert to fraction form
    658,012.46/987,332.45 = 358,486.43/x
  3. Step 3: Cross multiply
    658,012.46x = 987,332.45 × 358,486.43
  4. Step 4: Simplify right side
    658,012.46x = 353,945,278,494.56
  5. Step 5: Solve for x
    x = 353,945,278,494.56/658,012.46
  6. Step 6: Final answer
    x = 537,900.58

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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.