Home / 987,982.78-1,363,381.32-558,253.68

Finding the Fourth Proportional to 987,982.78, 1,363,381.32 and 558,253.68

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Solution

The fourth proportional to 987,982.78, 1,363,381.32 and 558,253.68 is: 770,370.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,982.78 : 1,363,381.32 = 558,253.68 : x
  2. Step 2: Convert to fraction form
    987,982.78/1,363,381.32 = 558,253.68/x
  3. Step 3: Cross multiply
    987,982.78x = 1,363,381.32 × 558,253.68
  4. Step 4: Simplify right side
    987,982.78x = 761,112,639,133.26
  5. Step 5: Solve for x
    x = 761,112,639,133.26/987,982.78
  6. Step 6: Final answer
    x = 770,370.35

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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.