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Finding the Fourth Proportional to 720,271.11, 1,080,293.09 and 453,214.11

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Solution

The fourth proportional to 720,271.11, 1,080,293.09 and 453,214.11 is: 679,749.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,271.11 : 1,080,293.09 = 453,214.11 : x
  2. Step 2: Convert to fraction form
    720,271.11/1,080,293.09 = 453,214.11/x
  3. Step 3: Cross multiply
    720,271.11x = 1,080,293.09 × 453,214.11
  4. Step 4: Simplify right side
    720,271.11x = 489,604,069,057.43
  5. Step 5: Solve for x
    x = 489,604,069,057.43/720,271.11
  6. Step 6: Final answer
    x = 679,749.70

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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.