Home / 843,209.40-1,264,376.70-310,456.20

Finding the Fourth Proportional to 843,209.40, 1,264,376.70 and 310,456.20

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Solution

The fourth proportional to 843,209.40, 1,264,376.70 and 310,456.20 is: 465,523.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,209.40 : 1,264,376.70 = 310,456.20 : x
  2. Step 2: Convert to fraction form
    843,209.40/1,264,376.70 = 310,456.20/x
  3. Step 3: Cross multiply
    843,209.40x = 1,264,376.70 × 310,456.20
  4. Step 4: Simplify right side
    843,209.40x = 392,533,585,650.54
  5. Step 5: Solve for x
    x = 392,533,585,650.54/843,209.40
  6. Step 6: Final answer
    x = 465,523.26

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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.