Home / 1,386,959.40-2,080,666.80-427,415.17

Finding the Fourth Proportional to 1,386,959.40, 2,080,666.80 and 427,415.17

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Solution

The fourth proportional to 1,386,959.40, 2,080,666.80 and 427,415.17 is: 641,192.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,959.40 : 2,080,666.80 = 427,415.17 : x
  2. Step 2: Convert to fraction form
    1,386,959.40/2,080,666.80 = 427,415.17/x
  3. Step 3: Cross multiply
    1,386,959.40x = 2,080,666.80 × 427,415.17
  4. Step 4: Simplify right side
    1,386,959.40x = 889,308,548,833.69
  5. Step 5: Solve for x
    x = 889,308,548,833.69/1,386,959.40
  6. Step 6: Final answer
    x = 641,192.92

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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.