Home / 955,875.78-1,319,136.61-520,321.54

Finding the Fourth Proportional to 955,875.78, 1,319,136.61 and 520,321.54

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Solution

The fourth proportional to 955,875.78, 1,319,136.61 and 520,321.54 is: 718,058.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    955,875.78 : 1,319,136.61 = 520,321.54 : x
  2. Step 2: Convert to fraction form
    955,875.78/1,319,136.61 = 520,321.54/x
  3. Step 3: Cross multiply
    955,875.78x = 1,319,136.61 × 520,321.54
  4. Step 4: Simplify right side
    955,875.78x = 686,375,190,388.54
  5. Step 5: Solve for x
    x = 686,375,190,388.54/955,875.78
  6. Step 6: Final answer
    x = 718,058.98

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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.