Home / 642,945.24-964,286.10-243,448.20

Finding the Fourth Proportional to 642,945.24, 964,286.10 and 243,448.20

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Solution

The fourth proportional to 642,945.24, 964,286.10 and 243,448.20 is: 365,122.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,945.24 : 964,286.10 = 243,448.20 : x
  2. Step 2: Convert to fraction form
    642,945.24/964,286.10 = 243,448.20/x
  3. Step 3: Cross multiply
    642,945.24x = 964,286.10 × 243,448.20
  4. Step 4: Simplify right side
    642,945.24x = 234,753,715,330.02
  5. Step 5: Solve for x
    x = 234,753,715,330.02/642,945.24
  6. Step 6: Final answer
    x = 365,122.41

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Half scale
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Double scale
Find fourth proportional to 642,946.24, 964,287.60 and 243,449.20
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.