Home / 1,386,731.76-2,080,175.40-389,382

Finding the Fourth Proportional to 1,386,731.76, 2,080,175.40 and 389,382

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Solution

The fourth proportional to 1,386,731.76, 2,080,175.40 and 389,382 is: 584,094.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,731.76 : 2,080,175.40 = 389,382 : x
  2. Step 2: Convert to fraction form
    1,386,731.76/2,080,175.40 = 389,382/x
  3. Step 3: Cross multiply
    1,386,731.76x = 2,080,175.40 × 389,382
  4. Step 4: Simplify right side
    1,386,731.76x = 809,982,857,602.80
  5. Step 5: Solve for x
    x = 809,982,857,602.80/1,386,731.76
  6. Step 6: Final answer
    x = 584,094.83

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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.