Home / 910,077.40-1,365,116.10-278,909.20

Finding the Fourth Proportional to 910,077.40, 1,365,116.10 and 278,909.20

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Solution

The fourth proportional to 910,077.40, 1,365,116.10 and 278,909.20 is: 418,363.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,077.40 : 1,365,116.10 = 278,909.20 : x
  2. Step 2: Convert to fraction form
    910,077.40/1,365,116.10 = 278,909.20/x
  3. Step 3: Cross multiply
    910,077.40x = 1,365,116.10 × 278,909.20
  4. Step 4: Simplify right side
    910,077.40x = 380,743,439,358.12
  5. Step 5: Solve for x
    x = 380,743,439,358.12/910,077.40
  6. Step 6: Final answer
    x = 418,363.80

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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.