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Finding the Fourth Proportional to 658,609.69, 908,882.28 and 356,803.69

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Solution

The fourth proportional to 658,609.69, 908,882.28 and 356,803.69 is: 492,389.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,609.69 : 908,882.28 = 356,803.69 : x
  2. Step 2: Convert to fraction form
    658,609.69/908,882.28 = 356,803.69/x
  3. Step 3: Cross multiply
    658,609.69x = 908,882.28 × 356,803.69
  4. Step 4: Simplify right side
    658,609.69x = 324,292,551,279.61
  5. Step 5: Solve for x
    x = 324,292,551,279.61/658,609.69
  6. Step 6: Final answer
    x = 492,389.58

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Double scale
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Similar ratio
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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.