Home / 1,329,320.80-1,993,981.20-442,856.80

Finding the Fourth Proportional to 1,329,320.80, 1,993,981.20 and 442,856.80

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Solution

The fourth proportional to 1,329,320.80, 1,993,981.20 and 442,856.80 is: 664,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,320.80 : 1,993,981.20 = 442,856.80 : x
  2. Step 2: Convert to fraction form
    1,329,320.80/1,993,981.20 = 442,856.80/x
  3. Step 3: Cross multiply
    1,329,320.80x = 1,993,981.20 × 442,856.80
  4. Step 4: Simplify right side
    1,329,320.80x = 883,048,133,492.16
  5. Step 5: Solve for x
    x = 883,048,133,492.16/1,329,320.80
  6. Step 6: Final answer
    x = 664,285.20

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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.