Home / 712,022.86-982,397.23-405,987.65

Finding the Fourth Proportional to 712,022.86, 982,397.23 and 405,987.65

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Solution

The fourth proportional to 712,022.86, 982,397.23 and 405,987.65 is: 560,152.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,022.86 : 982,397.23 = 405,987.65 : x
  2. Step 2: Convert to fraction form
    712,022.86/982,397.23 = 405,987.65/x
  3. Step 3: Cross multiply
    712,022.86x = 982,397.23 × 405,987.65
  4. Step 4: Simplify right side
    712,022.86x = 398,841,142,774.21
  5. Step 5: Solve for x
    x = 398,841,142,774.21/712,022.86
  6. Step 6: Final answer
    x = 560,152.16

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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.