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Finding the Fourth Proportional to 559,059.40, 838,589.10 and 498,406.60

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Solution

The fourth proportional to 559,059.40, 838,589.10 and 498,406.60 is: 747,609.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,059.40 : 838,589.10 = 498,406.60 : x
  2. Step 2: Convert to fraction form
    559,059.40/838,589.10 = 498,406.60/x
  3. Step 3: Cross multiply
    559,059.40x = 838,589.10 × 498,406.60
  4. Step 4: Simplify right side
    559,059.40x = 417,958,342,128.06
  5. Step 5: Solve for x
    x = 417,958,342,128.06/559,059.40
  6. Step 6: Final answer
    x = 747,609.90

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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.