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Finding the Fourth Proportional to 867,110.40, 1,300,600.80 and 361,540.80

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Solution

The fourth proportional to 867,110.40, 1,300,600.80 and 361,540.80 is: 542,284.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,110.40 : 1,300,600.80 = 361,540.80 : x
  2. Step 2: Convert to fraction form
    867,110.40/1,300,600.80 = 361,540.80/x
  3. Step 3: Cross multiply
    867,110.40x = 1,300,600.80 × 361,540.80
  4. Step 4: Simplify right side
    867,110.40x = 470,220,253,712.64
  5. Step 5: Solve for x
    x = 470,220,253,712.64/867,110.40
  6. Step 6: Final answer
    x = 542,284.18

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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.