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Finding the Fourth Proportional to 540,123.40, 810,185.10 and 479,470.60

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Solution

The fourth proportional to 540,123.40, 810,185.10 and 479,470.60 is: 719,205.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,123.40 : 810,185.10 = 479,470.60 : x
  2. Step 2: Convert to fraction form
    540,123.40/810,185.10 = 479,470.60/x
  3. Step 3: Cross multiply
    540,123.40x = 810,185.10 × 479,470.60
  4. Step 4: Simplify right side
    540,123.40x = 388,459,936,008.06
  5. Step 5: Solve for x
    x = 388,459,936,008.06/540,123.40
  6. Step 6: Final answer
    x = 719,205.90

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.