Home / 851,121.30-1,276,595.55-290,147.70

Finding the Fourth Proportional to 851,121.30, 1,276,595.55 and 290,147.70

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Solution

The fourth proportional to 851,121.30, 1,276,595.55 and 290,147.70 is: 435,192.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,121.30 : 1,276,595.55 = 290,147.70 : x
  2. Step 2: Convert to fraction form
    851,121.30/1,276,595.55 = 290,147.70/x
  3. Step 3: Cross multiply
    851,121.30x = 1,276,595.55 × 290,147.70
  4. Step 4: Simplify right side
    851,121.30x = 370,401,262,662.74
  5. Step 5: Solve for x
    x = 370,401,262,662.74/851,121.30
  6. Step 6: Final answer
    x = 435,192.10

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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.