Home / 815,929.20-1,224,331.20-342,662.40

Finding the Fourth Proportional to 815,929.20, 1,224,331.20 and 342,662.40

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Solution

The fourth proportional to 815,929.20, 1,224,331.20 and 342,662.40 is: 514,177.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,929.20 : 1,224,331.20 = 342,662.40 : x
  2. Step 2: Convert to fraction form
    815,929.20/1,224,331.20 = 342,662.40/x
  3. Step 3: Cross multiply
    815,929.20x = 1,224,331.20 × 342,662.40
  4. Step 4: Simplify right side
    815,929.20x = 419,532,267,386.88
  5. Step 5: Solve for x
    x = 419,532,267,386.88/815,929.20
  6. Step 6: Final answer
    x = 514,177.29

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1.5x scale

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.