Home / 786,089.40-1,179,134.10-253,627.80

Finding the Fourth Proportional to 786,089.40, 1,179,134.10 and 253,627.80

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Solution

The fourth proportional to 786,089.40, 1,179,134.10 and 253,627.80 is: 380,441.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,089.40 : 1,179,134.10 = 253,627.80 : x
  2. Step 2: Convert to fraction form
    786,089.40/1,179,134.10 = 253,627.80/x
  3. Step 3: Cross multiply
    786,089.40x = 1,179,134.10 × 253,627.80
  4. Step 4: Simplify right side
    786,089.40x = 299,061,187,687.98
  5. Step 5: Solve for x
    x = 299,061,187,687.98/786,089.40
  6. Step 6: Final answer
    x = 380,441.70

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Half scale
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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.