Home / 1,107,821.80-1,661,732.70-397,959.40

Finding the Fourth Proportional to 1,107,821.80, 1,661,732.70 and 397,959.40

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Solution

The fourth proportional to 1,107,821.80, 1,661,732.70 and 397,959.40 is: 596,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,821.80 : 1,661,732.70 = 397,959.40 : x
  2. Step 2: Convert to fraction form
    1,107,821.80/1,661,732.70 = 397,959.40/x
  3. Step 3: Cross multiply
    1,107,821.80x = 1,661,732.70 × 397,959.40
  4. Step 4: Simplify right side
    1,107,821.80x = 661,302,148,252.38
  5. Step 5: Solve for x
    x = 661,302,148,252.38/1,107,821.80
  6. Step 6: Final answer
    x = 596,939.10

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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.