Home / 785,905.40-1,178,858.10-253,443.80

Finding the Fourth Proportional to 785,905.40, 1,178,858.10 and 253,443.80

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Solution

The fourth proportional to 785,905.40, 1,178,858.10 and 253,443.80 is: 380,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,905.40 : 1,178,858.10 = 253,443.80 : x
  2. Step 2: Convert to fraction form
    785,905.40/1,178,858.10 = 253,443.80/x
  3. Step 3: Cross multiply
    785,905.40x = 1,178,858.10 × 253,443.80
  4. Step 4: Simplify right side
    785,905.40x = 298,774,276,524.78
  5. Step 5: Solve for x
    x = 298,774,276,524.78/785,905.40
  6. Step 6: Final answer
    x = 380,165.70

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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.