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Finding the Fourth Proportional to 605,615.40, 908,423.10 and 406,549.80

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Solution

The fourth proportional to 605,615.40, 908,423.10 and 406,549.80 is: 609,824.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,615.40 : 908,423.10 = 406,549.80 : x
  2. Step 2: Convert to fraction form
    605,615.40/908,423.10 = 406,549.80/x
  3. Step 3: Cross multiply
    605,615.40x = 908,423.10 × 406,549.80
  4. Step 4: Simplify right side
    605,615.40x = 369,319,229,620.38
  5. Step 5: Solve for x
    x = 369,319,229,620.38/605,615.40
  6. Step 6: Final answer
    x = 609,824.70

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Similar ratio
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1.5x scale

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.