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Finding the Fourth Proportional to 658,776.18, 909,103.55 and 356,970.18

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Solution

The fourth proportional to 658,776.18, 909,103.55 and 356,970.18 is: 492,614.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,776.18 : 909,103.55 = 356,970.18 : x
  2. Step 2: Convert to fraction form
    658,776.18/909,103.55 = 356,970.18/x
  3. Step 3: Cross multiply
    658,776.18x = 909,103.55 × 356,970.18
  4. Step 4: Simplify right side
    658,776.18x = 324,522,857,882.14
  5. Step 5: Solve for x
    x = 324,522,857,882.14/658,776.18
  6. Step 6: Final answer
    x = 492,614.74

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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.