Home / 728,721.20-1,093,081.80-678,954.80

Finding the Fourth Proportional to 728,721.20, 1,093,081.80 and 678,954.80

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Solution

The fourth proportional to 728,721.20, 1,093,081.80 and 678,954.80 is: 1,018,432.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,721.20 : 1,093,081.80 = 678,954.80 : x
  2. Step 2: Convert to fraction form
    728,721.20/1,093,081.80 = 678,954.80/x
  3. Step 3: Cross multiply
    728,721.20x = 1,093,081.80 × 678,954.80
  4. Step 4: Simplify right side
    728,721.20x = 742,153,134,902.64
  5. Step 5: Solve for x
    x = 742,153,134,902.64/728,721.20
  6. Step 6: Final answer
    x = 1,018,432.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.