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Finding the Fourth Proportional to 485,843.02, 728,764.55 and 260,894.02

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Solution

The fourth proportional to 485,843.02, 728,764.55 and 260,894.02 is: 391,341.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,843.02 : 728,764.55 = 260,894.02 : x
  2. Step 2: Convert to fraction form
    485,843.02/728,764.55 = 260,894.02/x
  3. Step 3: Cross multiply
    485,843.02x = 728,764.55 × 260,894.02
  4. Step 4: Simplify right side
    485,843.02x = 190,130,313,082.99
  5. Step 5: Solve for x
    x = 190,130,313,082.99/485,843.02
  6. Step 6: Final answer
    x = 391,341.04

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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.