Home / 642,557.20-963,544.20-243,065.20

Finding the Fourth Proportional to 642,557.20, 963,544.20 and 243,065.20

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Solution

The fourth proportional to 642,557.20, 963,544.20 and 243,065.20 is: 364,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,557.20 : 963,544.20 = 243,065.20 : x
  2. Step 2: Convert to fraction form
    642,557.20/963,544.20 = 243,065.20/x
  3. Step 3: Cross multiply
    642,557.20x = 963,544.20 × 243,065.20
  4. Step 4: Simplify right side
    642,557.20x = 234,204,063,681.84
  5. Step 5: Solve for x
    x = 234,204,063,681.84/642,557.20
  6. Step 6: Final answer
    x = 364,487.49

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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.