Home / 1,086,543.80-1,629,742.80-287,808.20

Finding the Fourth Proportional to 1,086,543.80, 1,629,742.80 and 287,808.20

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Solution

The fourth proportional to 1,086,543.80, 1,629,742.80 and 287,808.20 is: 431,692.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,543.80 : 1,629,742.80 = 287,808.20 : x
  2. Step 2: Convert to fraction form
    1,086,543.80/1,629,742.80 = 287,808.20/x
  3. Step 3: Cross multiply
    1,086,543.80x = 1,629,742.80 × 287,808.20
  4. Step 4: Simplify right side
    1,086,543.80x = 469,053,341,730.96
  5. Step 5: Solve for x
    x = 469,053,341,730.96/1,086,543.80
  6. Step 6: Final answer
    x = 431,692.99

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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.