Home / 811,271.20-1,217,943.60-432,493.60

Finding the Fourth Proportional to 811,271.20, 1,217,943.60 and 432,493.60

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Solution

The fourth proportional to 811,271.20, 1,217,943.60 and 432,493.60 is: 649,293.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,271.20 : 1,217,943.60 = 432,493.60 : x
  2. Step 2: Convert to fraction form
    811,271.20/1,217,943.60 = 432,493.60/x
  3. Step 3: Cross multiply
    811,271.20x = 1,217,943.60 × 432,493.60
  4. Step 4: Simplify right side
    811,271.20x = 526,752,812,160.96
  5. Step 5: Solve for x
    x = 526,752,812,160.96/811,271.20
  6. Step 6: Final answer
    x = 649,293.12

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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.