Home / 1,191,281.41-1,643,984-647,425.84

Finding the Fourth Proportional to 1,191,281.41, 1,643,984 and 647,425.84

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Solution

The fourth proportional to 1,191,281.41, 1,643,984 and 647,425.84 is: 893,456.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,281.41 : 1,643,984 = 647,425.84 : x
  2. Step 2: Convert to fraction form
    1,191,281.41/1,643,984 = 647,425.84/x
  3. Step 3: Cross multiply
    1,191,281.41x = 1,643,984 × 647,425.84
  4. Step 4: Simplify right side
    1,191,281.41x = 1,064,357,722,146.56
  5. Step 5: Solve for x
    x = 1,064,357,722,146.56/1,191,281.41
  6. Step 6: Final answer
    x = 893,456.17

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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.