Home / 1,126,030.40-1,553,905.92-642,748.64

Finding the Fourth Proportional to 1,126,030.40, 1,553,905.92 and 642,748.64

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Solution

The fourth proportional to 1,126,030.40, 1,553,905.92 and 642,748.64 is: 886,983.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,030.40 : 1,553,905.92 = 642,748.64 : x
  2. Step 2: Convert to fraction form
    1,126,030.40/1,553,905.92 = 642,748.64/x
  3. Step 3: Cross multiply
    1,126,030.40x = 1,553,905.92 × 642,748.64
  4. Step 4: Simplify right side
    1,126,030.40x = 998,770,916,767.95
  5. Step 5: Solve for x
    x = 998,770,916,767.95/1,126,030.40
  6. Step 6: Final answer
    x = 886,983.97

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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.