Home / 1,125,378.54-1,553,147.19-642,062.88

Finding the Fourth Proportional to 1,125,378.54, 1,553,147.19 and 642,062.88

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Solution

The fourth proportional to 1,125,378.54, 1,553,147.19 and 642,062.88 is: 886,117.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,378.54 : 1,553,147.19 = 642,062.88 : x
  2. Step 2: Convert to fraction form
    1,125,378.54/1,553,147.19 = 642,062.88/x
  3. Step 3: Cross multiply
    1,125,378.54x = 1,553,147.19 × 642,062.88
  4. Step 4: Simplify right side
    1,125,378.54x = 997,218,157,875.31
  5. Step 5: Solve for x
    x = 997,218,157,875.31/1,125,378.54
  6. Step 6: Final answer
    x = 886,117.98

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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.