Home / 910,868.60-1,366,302.90-378,115.40

Finding the Fourth Proportional to 910,868.60, 1,366,302.90 and 378,115.40

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Solution

The fourth proportional to 910,868.60, 1,366,302.90 and 378,115.40 is: 567,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,868.60 : 1,366,302.90 = 378,115.40 : x
  2. Step 2: Convert to fraction form
    910,868.60/1,366,302.90 = 378,115.40/x
  3. Step 3: Cross multiply
    910,868.60x = 1,366,302.90 × 378,115.40
  4. Step 4: Simplify right side
    910,868.60x = 516,620,167,554.66
  5. Step 5: Solve for x
    x = 516,620,167,554.66/910,868.60
  6. Step 6: Final answer
    x = 567,173.10

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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.