Home / 712,023.36-982,397.93-405,988.16

Finding the Fourth Proportional to 712,023.36, 982,397.93 and 405,988.16

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Solution

The fourth proportional to 712,023.36, 982,397.93 and 405,988.16 is: 560,152.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,023.36 : 982,397.93 = 405,988.16 : x
  2. Step 2: Convert to fraction form
    712,023.36/982,397.93 = 405,988.16/x
  3. Step 3: Cross multiply
    712,023.36x = 982,397.93 × 405,988.16
  4. Step 4: Simplify right side
    712,023.36x = 398,841,921,046.58
  5. Step 5: Solve for x
    x = 398,841,921,046.58/712,023.36
  6. Step 6: Final answer
    x = 560,152.86

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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.