Home / 820,215.52-1,131,870.92-447,664.12

Finding the Fourth Proportional to 820,215.52, 1,131,870.92 and 447,664.12

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Solution

The fourth proportional to 820,215.52, 1,131,870.92 and 447,664.12 is: 617,762.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,215.52 : 1,131,870.92 = 447,664.12 : x
  2. Step 2: Convert to fraction form
    820,215.52/1,131,870.92 = 447,664.12/x
  3. Step 3: Cross multiply
    820,215.52x = 1,131,870.92 × 447,664.12
  4. Step 4: Simplify right side
    820,215.52x = 506,697,994,287.39
  5. Step 5: Solve for x
    x = 506,697,994,287.39/820,215.52
  6. Step 6: Final answer
    x = 617,762.02

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1.5x scale

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.