Home / 814,219.20-1,221,328.80-578,023.20

Finding the Fourth Proportional to 814,219.20, 1,221,328.80 and 578,023.20

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Solution

The fourth proportional to 814,219.20, 1,221,328.80 and 578,023.20 is: 867,034.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,219.20 : 1,221,328.80 = 578,023.20 : x
  2. Step 2: Convert to fraction form
    814,219.20/1,221,328.80 = 578,023.20/x
  3. Step 3: Cross multiply
    814,219.20x = 1,221,328.80 × 578,023.20
  4. Step 4: Simplify right side
    814,219.20x = 705,956,381,228.16
  5. Step 5: Solve for x
    x = 705,956,381,228.16/814,219.20
  6. Step 6: Final answer
    x = 867,034.80

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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.