Home / 1,236,608.80-1,854,913.20-921,680.80

Finding the Fourth Proportional to 1,236,608.80, 1,854,913.20 and 921,680.80

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Solution

The fourth proportional to 1,236,608.80, 1,854,913.20 and 921,680.80 is: 1,382,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236,608.80 : 1,854,913.20 = 921,680.80 : x
  2. Step 2: Convert to fraction form
    1,236,608.80/1,854,913.20 = 921,680.80/x
  3. Step 3: Cross multiply
    1,236,608.80x = 1,854,913.20 × 921,680.80
  4. Step 4: Simplify right side
    1,236,608.80x = 1,709,637,882,106.56
  5. Step 5: Solve for x
    x = 1,709,637,882,106.56/1,236,608.80
  6. Step 6: Final answer
    x = 1,382,521.20

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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.