Home / 786,099.40-1,179,149.10-253,637.80

Finding the Fourth Proportional to 786,099.40, 1,179,149.10 and 253,637.80

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Solution

The fourth proportional to 786,099.40, 1,179,149.10 and 253,637.80 is: 380,456.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,099.40 : 1,179,149.10 = 253,637.80 : x
  2. Step 2: Convert to fraction form
    786,099.40/1,179,149.10 = 253,637.80/x
  3. Step 3: Cross multiply
    786,099.40x = 1,179,149.10 × 253,637.80
  4. Step 4: Simplify right side
    786,099.40x = 299,076,783,595.98
  5. Step 5: Solve for x
    x = 299,076,783,595.98/786,099.40
  6. Step 6: Final answer
    x = 380,456.70

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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.