Home / 816,212.88-1,223,071.92-342,638.28

Finding the Fourth Proportional to 816,212.88, 1,223,071.92 and 342,638.28

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Solution

The fourth proportional to 816,212.88, 1,223,071.92 and 342,638.28 is: 513,433.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,212.88 : 1,223,071.92 = 342,638.28 : x
  2. Step 2: Convert to fraction form
    816,212.88/1,223,071.92 = 342,638.28/x
  3. Step 3: Cross multiply
    816,212.88x = 1,223,071.92 × 342,638.28
  4. Step 4: Simplify right side
    816,212.88x = 419,071,258,985.10
  5. Step 5: Solve for x
    x = 419,071,258,985.10/816,212.88
  6. Step 6: Final answer
    x = 513,433.77

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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.