Home / 859,892.10-1,289,838.15-661,215.30

Finding the Fourth Proportional to 859,892.10, 1,289,838.15 and 661,215.30

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Solution

The fourth proportional to 859,892.10, 1,289,838.15 and 661,215.30 is: 991,822.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,892.10 : 1,289,838.15 = 661,215.30 : x
  2. Step 2: Convert to fraction form
    859,892.10/1,289,838.15 = 661,215.30/x
  3. Step 3: Cross multiply
    859,892.10x = 1,289,838.15 × 661,215.30
  4. Step 4: Simplify right side
    859,892.10x = 852,860,719,303.70
  5. Step 5: Solve for x
    x = 852,860,719,303.70/859,892.10
  6. Step 6: Final answer
    x = 991,822.95

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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.