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Finding the Fourth Proportional to 709,867.17, 979,609.23 and 387,576.27

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Solution

The fourth proportional to 709,867.17, 979,609.23 and 387,576.27 is: 534,851.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,867.17 : 979,609.23 = 387,576.27 : x
  2. Step 2: Convert to fraction form
    709,867.17/979,609.23 = 387,576.27/x
  3. Step 3: Cross multiply
    709,867.17x = 979,609.23 × 387,576.27
  4. Step 4: Simplify right side
    709,867.17x = 379,673,291,420.97
  5. Step 5: Solve for x
    x = 379,673,291,420.97/709,867.17
  6. Step 6: Final answer
    x = 534,851.18

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1.5x scale

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.