Home / 699,272.19-965,439.21-478,878.39

Finding the Fourth Proportional to 699,272.19, 965,439.21 and 478,878.39

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Solution

The fourth proportional to 699,272.19, 965,439.21 and 478,878.39 is: 661,155.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,272.19 : 965,439.21 = 478,878.39 : x
  2. Step 2: Convert to fraction form
    699,272.19/965,439.21 = 478,878.39/x
  3. Step 3: Cross multiply
    699,272.19x = 965,439.21 × 478,878.39
  4. Step 4: Simplify right side
    699,272.19x = 462,327,974,527.67
  5. Step 5: Solve for x
    x = 462,327,974,527.67/699,272.19
  6. Step 6: Final answer
    x = 661,155.96

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.