Home / 777,719.30-1,073,252.41-420,023.30

Finding the Fourth Proportional to 777,719.30, 1,073,252.41 and 420,023.30

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Solution

The fourth proportional to 777,719.30, 1,073,252.41 and 420,023.30 is: 579,632.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,719.30 : 1,073,252.41 = 420,023.30 : x
  2. Step 2: Convert to fraction form
    777,719.30/1,073,252.41 = 420,023.30/x
  3. Step 3: Cross multiply
    777,719.30x = 1,073,252.41 × 420,023.30
  4. Step 4: Simplify right side
    777,719.30x = 450,791,018,981.15
  5. Step 5: Solve for x
    x = 450,791,018,981.15/777,719.30
  6. Step 6: Final answer
    x = 579,632.03

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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.