Home / 877,839.20-1,315,970.40-345,723.20

Finding the Fourth Proportional to 877,839.20, 1,315,970.40 and 345,723.20

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Solution

The fourth proportional to 877,839.20, 1,315,970.40 and 345,723.20 is: 518,274.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,839.20 : 1,315,970.40 = 345,723.20 : x
  2. Step 2: Convert to fraction form
    877,839.20/1,315,970.40 = 345,723.20/x
  3. Step 3: Cross multiply
    877,839.20x = 1,315,970.40 × 345,723.20
  4. Step 4: Simplify right side
    877,839.20x = 454,961,497,793.28
  5. Step 5: Solve for x
    x = 454,961,497,793.28/877,839.20
  6. Step 6: Final answer
    x = 518,274.30

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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.