Home / 753,656.20-1,129,172.10-487,279.60

Finding the Fourth Proportional to 753,656.20, 1,129,172.10 and 487,279.60

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Solution

The fourth proportional to 753,656.20, 1,129,172.10 and 487,279.60 is: 730,070.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,656.20 : 1,129,172.10 = 487,279.60 : x
  2. Step 2: Convert to fraction form
    753,656.20/1,129,172.10 = 487,279.60/x
  3. Step 3: Cross multiply
    753,656.20x = 1,129,172.10 × 487,279.60
  4. Step 4: Simplify right side
    753,656.20x = 550,222,529,219.16
  5. Step 5: Solve for x
    x = 550,222,529,219.16/753,656.20
  6. Step 6: Final answer
    x = 730,070.99

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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.