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Finding the Fourth Proportional to 680,843.52, 939,565.44 and 379,048.32

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Solution

The fourth proportional to 680,843.52, 939,565.44 and 379,048.32 is: 523,087.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,843.52 : 939,565.44 = 379,048.32 : x
  2. Step 2: Convert to fraction form
    680,843.52/939,565.44 = 379,048.32/x
  3. Step 3: Cross multiply
    680,843.52x = 939,565.44 × 379,048.32
  4. Step 4: Simplify right side
    680,843.52x = 356,140,701,562.06
  5. Step 5: Solve for x
    x = 356,140,701,562.06/680,843.52
  6. Step 6: Final answer
    x = 523,087.45

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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.