Home / 913,880.72-1,371,149.04-408,399.36

Finding the Fourth Proportional to 913,880.72, 1,371,149.04 and 408,399.36

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Solution

The fourth proportional to 913,880.72, 1,371,149.04 and 408,399.36 is: 612,745.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,880.72 : 1,371,149.04 = 408,399.36 : x
  2. Step 2: Convert to fraction form
    913,880.72/1,371,149.04 = 408,399.36/x
  3. Step 3: Cross multiply
    913,880.72x = 1,371,149.04 × 408,399.36
  4. Step 4: Simplify right side
    913,880.72x = 559,976,390,400.61
  5. Step 5: Solve for x
    x = 559,976,390,400.61/913,880.72
  6. Step 6: Final answer
    x = 612,745.60

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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.