Home / 858,227.70-1,287,341.55-480,314.10

Finding the Fourth Proportional to 858,227.70, 1,287,341.55 and 480,314.10

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Solution

The fourth proportional to 858,227.70, 1,287,341.55 and 480,314.10 is: 720,471.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,227.70 : 1,287,341.55 = 480,314.10 : x
  2. Step 2: Convert to fraction form
    858,227.70/1,287,341.55 = 480,314.10/x
  3. Step 3: Cross multiply
    858,227.70x = 1,287,341.55 × 480,314.10
  4. Step 4: Simplify right side
    858,227.70x = 618,328,297,980.86
  5. Step 5: Solve for x
    x = 618,328,297,980.86/858,227.70
  6. Step 6: Final answer
    x = 720,471.15

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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.