Home / 805,000.20-1,207,718.07-272,521.27

Finding the Fourth Proportional to 805,000.20, 1,207,718.07 and 272,521.27

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Solution

The fourth proportional to 805,000.20, 1,207,718.07 and 272,521.27 is: 408,855.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,000.20 : 1,207,718.07 = 272,521.27 : x
  2. Step 2: Convert to fraction form
    805,000.20/1,207,718.07 = 272,521.27/x
  3. Step 3: Cross multiply
    805,000.20x = 1,207,718.07 × 272,521.27
  4. Step 4: Simplify right side
    805,000.20x = 329,128,862,238.35
  5. Step 5: Solve for x
    x = 329,128,862,238.35/805,000.20
  6. Step 6: Final answer
    x = 408,855.63

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1.5x scale

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.