Home / 987,983.78-1,363,382.70-558,254.68

Finding the Fourth Proportional to 987,983.78, 1,363,382.70 and 558,254.68

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Solution

The fourth proportional to 987,983.78, 1,363,382.70 and 558,254.68 is: 770,371.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,983.78 : 1,363,382.70 = 558,254.68 : x
  2. Step 2: Convert to fraction form
    987,983.78/1,363,382.70 = 558,254.68/x
  3. Step 3: Cross multiply
    987,983.78x = 1,363,382.70 × 558,254.68
  4. Step 4: Simplify right side
    987,983.78x = 761,114,772,906.04
  5. Step 5: Solve for x
    x = 761,114,772,906.04/987,983.78
  6. Step 6: Final answer
    x = 770,371.73

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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.