Home / 851,087.80-1,276,545.30-290,114.20

Finding the Fourth Proportional to 851,087.80, 1,276,545.30 and 290,114.20

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Solution

The fourth proportional to 851,087.80, 1,276,545.30 and 290,114.20 is: 435,141.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,087.80 : 1,276,545.30 = 290,114.20 : x
  2. Step 2: Convert to fraction form
    851,087.80/1,276,545.30 = 290,114.20/x
  3. Step 3: Cross multiply
    851,087.80x = 1,276,545.30 × 290,114.20
  4. Step 4: Simplify right side
    851,087.80x = 370,343,918,473.26
  5. Step 5: Solve for x
    x = 370,343,918,473.26/851,087.80
  6. Step 6: Final answer
    x = 435,141.85

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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.