Home / 1,215,320.80-1,822,981.20-328,856.80

Finding the Fourth Proportional to 1,215,320.80, 1,822,981.20 and 328,856.80

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Solution

The fourth proportional to 1,215,320.80, 1,822,981.20 and 328,856.80 is: 493,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,320.80 : 1,822,981.20 = 328,856.80 : x
  2. Step 2: Convert to fraction form
    1,215,320.80/1,822,981.20 = 328,856.80/x
  3. Step 3: Cross multiply
    1,215,320.80x = 1,822,981.20 × 328,856.80
  4. Step 4: Simplify right side
    1,215,320.80x = 599,499,763,892.16
  5. Step 5: Solve for x
    x = 599,499,763,892.16/1,215,320.80
  6. Step 6: Final answer
    x = 493,285.20

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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.