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Finding the Fourth Proportional to 638,081.40, 957,122.10 and 357,562.20

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Solution

The fourth proportional to 638,081.40, 957,122.10 and 357,562.20 is: 536,343.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,081.40 : 957,122.10 = 357,562.20 : x
  2. Step 2: Convert to fraction form
    638,081.40/957,122.10 = 357,562.20/x
  3. Step 3: Cross multiply
    638,081.40x = 957,122.10 × 357,562.20
  4. Step 4: Simplify right side
    638,081.40x = 342,230,683,744.62
  5. Step 5: Solve for x
    x = 342,230,683,744.62/638,081.40
  6. Step 6: Final answer
    x = 536,343.30

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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.