Home / 543,288.30-815,041.80-455,152.20

Finding the Fourth Proportional to 543,288.30, 815,041.80 and 455,152.20

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Solution

The fourth proportional to 543,288.30, 815,041.80 and 455,152.20 is: 682,819.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,288.30 : 815,041.80 = 455,152.20 : x
  2. Step 2: Convert to fraction form
    543,288.30/815,041.80 = 455,152.20/x
  3. Step 3: Cross multiply
    543,288.30x = 815,041.80 × 455,152.20
  4. Step 4: Simplify right side
    543,288.30x = 370,968,068,361.96
  5. Step 5: Solve for x
    x = 370,968,068,361.96/543,288.30
  6. Step 6: Final answer
    x = 682,819.91

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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.