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Finding the Fourth Proportional to 438,822.20, 616,122.55 and 438,822.20

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Solution

The fourth proportional to 438,822.20, 616,122.55 and 438,822.20 is: 616,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,822.20 : 616,122.55 = 438,822.20 : x
  2. Step 2: Convert to fraction form
    438,822.20/616,122.55 = 438,822.20/x
  3. Step 3: Cross multiply
    438,822.20x = 616,122.55 × 438,822.20
  4. Step 4: Simplify right side
    438,822.20x = 270,368,252,860.61
  5. Step 5: Solve for x
    x = 270,368,252,860.61/438,822.20
  6. Step 6: Final answer
    x = 616,122.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.