Home / 1,125,921.39-1,553,882.45-642,559.29

Finding the Fourth Proportional to 1,125,921.39, 1,553,882.45 and 642,559.29

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Solution

The fourth proportional to 1,125,921.39, 1,553,882.45 and 642,559.29 is: 886,795.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,921.39 : 1,553,882.45 = 642,559.29 : x
  2. Step 2: Convert to fraction form
    1,125,921.39/1,553,882.45 = 642,559.29/x
  3. Step 3: Cross multiply
    1,125,921.39x = 1,553,882.45 × 642,559.29
  4. Step 4: Simplify right side
    1,125,921.39x = 998,461,600,602.66
  5. Step 5: Solve for x
    x = 998,461,600,602.66/1,125,921.39
  6. Step 6: Final answer
    x = 886,795.13

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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.