Home / 987,640.35-1,363,054.67-557,948.31

Finding the Fourth Proportional to 987,640.35, 1,363,054.67 and 557,948.31

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Solution

The fourth proportional to 987,640.35, 1,363,054.67 and 557,948.31 is: 770,031.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,640.35 : 1,363,054.67 = 557,948.31 : x
  2. Step 2: Convert to fraction form
    987,640.35/1,363,054.67 = 557,948.31/x
  3. Step 3: Cross multiply
    987,640.35x = 1,363,054.67 × 557,948.31
  4. Step 4: Simplify right side
    987,640.35x = 760,514,049,564.11
  5. Step 5: Solve for x
    x = 760,514,049,564.11/987,640.35
  6. Step 6: Final answer
    x = 770,031.37

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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.