Home / 1,238,254.80-1,854,271.80-815,240.40

Finding the Fourth Proportional to 1,238,254.80, 1,854,271.80 and 815,240.40

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Solution

The fourth proportional to 1,238,254.80, 1,854,271.80 and 815,240.40 is: 1,220,812.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,254.80 : 1,854,271.80 = 815,240.40 : x
  2. Step 2: Convert to fraction form
    1,238,254.80/1,854,271.80 = 815,240.40/x
  3. Step 3: Cross multiply
    1,238,254.80x = 1,854,271.80 × 815,240.40
  4. Step 4: Simplify right side
    1,238,254.80x = 1,511,677,283,940.72
  5. Step 5: Solve for x
    x = 1,511,677,283,940.72/1,238,254.80
  6. Step 6: Final answer
    x = 1,220,812.78

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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.