Home / 847,863.20-1,170,116.32-485,400.74

Finding the Fourth Proportional to 847,863.20, 1,170,116.32 and 485,400.74

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Solution

The fourth proportional to 847,863.20, 1,170,116.32 and 485,400.74 is: 669,890.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,863.20 : 1,170,116.32 = 485,400.74 : x
  2. Step 2: Convert to fraction form
    847,863.20/1,170,116.32 = 485,400.74/x
  3. Step 3: Cross multiply
    847,863.20x = 1,170,116.32 × 485,400.74
  4. Step 4: Simplify right side
    847,863.20x = 567,975,327,614.08
  5. Step 5: Solve for x
    x = 567,975,327,614.08/847,863.20
  6. Step 6: Final answer
    x = 669,890.29

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Double scale
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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.