Home / 1,040,181.20-1,560,271.80-921,208.40

Finding the Fourth Proportional to 1,040,181.20, 1,560,271.80 and 921,208.40

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Solution

The fourth proportional to 1,040,181.20, 1,560,271.80 and 921,208.40 is: 1,381,812.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,181.20 : 1,560,271.80 = 921,208.40 : x
  2. Step 2: Convert to fraction form
    1,040,181.20/1,560,271.80 = 921,208.40/x
  3. Step 3: Cross multiply
    1,040,181.20x = 1,560,271.80 × 921,208.40
  4. Step 4: Simplify right side
    1,040,181.20x = 1,437,335,488,443.12
  5. Step 5: Solve for x
    x = 1,437,335,488,443.12/1,040,181.20
  6. Step 6: Final answer
    x = 1,381,812.60

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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.