Home / 1,432,088.66-1,976,279.51-820,439.43

Finding the Fourth Proportional to 1,432,088.66, 1,976,279.51 and 820,439.43

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Solution

The fourth proportional to 1,432,088.66, 1,976,279.51 and 820,439.43 is: 1,132,204.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,088.66 : 1,976,279.51 = 820,439.43 : x
  2. Step 2: Convert to fraction form
    1,432,088.66/1,976,279.51 = 820,439.43/x
  3. Step 3: Cross multiply
    1,432,088.66x = 1,976,279.51 × 820,439.43
  4. Step 4: Simplify right side
    1,432,088.66x = 1,621,417,630,602.88
  5. Step 5: Solve for x
    x = 1,621,417,630,602.88/1,432,088.66
  6. Step 6: Final answer
    x = 1,132,204.79

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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.