Home / 1,279,478.02-1,765,680.70-820,591.17

Finding the Fourth Proportional to 1,279,478.02, 1,765,680.70 and 820,591.17

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Solution

The fourth proportional to 1,279,478.02, 1,765,680.70 and 820,591.17 is: 1,132,416.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,478.02 : 1,765,680.70 = 820,591.17 : x
  2. Step 2: Convert to fraction form
    1,279,478.02/1,765,680.70 = 820,591.17/x
  3. Step 3: Cross multiply
    1,279,478.02x = 1,765,680.70 × 820,591.17
  4. Step 4: Simplify right side
    1,279,478.02x = 1,448,901,989,407.94
  5. Step 5: Solve for x
    x = 1,448,901,989,407.94/1,279,478.02
  6. Step 6: Final answer
    x = 1,132,416.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.