Home / 1,040,219.20-1,560,328.80-921,246.40

Finding the Fourth Proportional to 1,040,219.20, 1,560,328.80 and 921,246.40

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Solution

The fourth proportional to 1,040,219.20, 1,560,328.80 and 921,246.40 is: 1,381,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,219.20 : 1,560,328.80 = 921,246.40 : x
  2. Step 2: Convert to fraction form
    1,040,219.20/1,560,328.80 = 921,246.40/x
  3. Step 3: Cross multiply
    1,040,219.20x = 1,560,328.80 × 921,246.40
  4. Step 4: Simplify right side
    1,040,219.20x = 1,437,447,289,816.32
  5. Step 5: Solve for x
    x = 1,437,447,289,816.32/1,040,219.20
  6. Step 6: Final answer
    x = 1,381,869.60

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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.