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Finding the Fourth Proportional to 674,052, 930,184 and 387,573.20

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Solution

The fourth proportional to 674,052, 930,184 and 387,573.20 is: 534,846.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,052 : 930,184 = 387,573.20 : x
  2. Step 2: Convert to fraction form
    674,052/930,184 = 387,573.20/x
  3. Step 3: Cross multiply
    674,052x = 930,184 × 387,573.20
  4. Step 4: Simplify right side
    674,052x = 360,514,389,468.80
  5. Step 5: Solve for x
    x = 360,514,389,468.80/674,052
  6. Step 6: Final answer
    x = 534,846.55

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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.