Home / 1,553,390.76-2,143,542.78-865,010.64

Finding the Fourth Proportional to 1,553,390.76, 2,143,542.78 and 865,010.64

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Solution

The fourth proportional to 1,553,390.76, 2,143,542.78 and 865,010.64 is: 1,193,638.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553,390.76 : 2,143,542.78 = 865,010.64 : x
  2. Step 2: Convert to fraction form
    1,553,390.76/2,143,542.78 = 865,010.64/x
  3. Step 3: Cross multiply
    1,553,390.76x = 2,143,542.78 × 865,010.64
  4. Step 4: Simplify right side
    1,553,390.76x = 1,854,187,311,995.18
  5. Step 5: Solve for x
    x = 1,854,187,311,995.18/1,553,390.76
  6. Step 6: Final answer
    x = 1,193,638.69

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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.