Home / 890,666.40-1,335,999.60-259,600.80

Finding the Fourth Proportional to 890,666.40, 1,335,999.60 and 259,600.80

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Solution

The fourth proportional to 890,666.40, 1,335,999.60 and 259,600.80 is: 389,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,666.40 : 1,335,999.60 = 259,600.80 : x
  2. Step 2: Convert to fraction form
    890,666.40/1,335,999.60 = 259,600.80/x
  3. Step 3: Cross multiply
    890,666.40x = 1,335,999.60 × 259,600.80
  4. Step 4: Simplify right side
    890,666.40x = 346,826,564,959.68
  5. Step 5: Solve for x
    x = 346,826,564,959.68/890,666.40
  6. Step 6: Final answer
    x = 389,401.20

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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.