Home / 858,359.60-1,290,649.80-839,697.20

Finding the Fourth Proportional to 858,359.60, 1,290,649.80 and 839,697.20

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Solution

The fourth proportional to 858,359.60, 1,290,649.80 and 839,697.20 is: 1,262,588.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,359.60 : 1,290,649.80 = 839,697.20 : x
  2. Step 2: Convert to fraction form
    858,359.60/1,290,649.80 = 839,697.20/x
  3. Step 3: Cross multiply
    858,359.60x = 1,290,649.80 × 839,697.20
  4. Step 4: Simplify right side
    858,359.60x = 1,083,755,023,240.56
  5. Step 5: Solve for x
    x = 1,083,755,023,240.56/858,359.60
  6. Step 6: Final answer
    x = 1,262,588.57

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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.