Home / 858,335.60-1,287,503.40-259,389.20

Finding the Fourth Proportional to 858,335.60, 1,287,503.40 and 259,389.20

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Solution

The fourth proportional to 858,335.60, 1,287,503.40 and 259,389.20 is: 389,083.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,335.60 : 1,287,503.40 = 259,389.20 : x
  2. Step 2: Convert to fraction form
    858,335.60/1,287,503.40 = 259,389.20/x
  3. Step 3: Cross multiply
    858,335.60x = 1,287,503.40 × 259,389.20
  4. Step 4: Simplify right side
    858,335.60x = 333,964,476,923.28
  5. Step 5: Solve for x
    x = 333,964,476,923.28/858,335.60
  6. Step 6: Final answer
    x = 389,083.80

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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.