Home / 851,876.10-1,276,064.55-431,388.90

Finding the Fourth Proportional to 851,876.10, 1,276,064.55 and 431,388.90

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Solution

The fourth proportional to 851,876.10, 1,276,064.55 and 431,388.90 is: 646,197.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,876.10 : 1,276,064.55 = 431,388.90 : x
  2. Step 2: Convert to fraction form
    851,876.10/1,276,064.55 = 431,388.90/x
  3. Step 3: Cross multiply
    851,876.10x = 1,276,064.55 × 431,388.90
  4. Step 4: Simplify right side
    851,876.10x = 550,480,082,553.50
  5. Step 5: Solve for x
    x = 550,480,082,553.50/851,876.10
  6. Step 6: Final answer
    x = 646,197.35

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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.