Home / 805,125.20-1,207,687.02-206,085.40

Finding the Fourth Proportional to 805,125.20, 1,207,687.02 and 206,085.40

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Solution

The fourth proportional to 805,125.20, 1,207,687.02 and 206,085.40 is: 309,127.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,125.20 : 1,207,687.02 = 206,085.40 : x
  2. Step 2: Convert to fraction form
    805,125.20/1,207,687.02 = 206,085.40/x
  3. Step 3: Cross multiply
    805,125.20x = 1,207,687.02 × 206,085.40
  4. Step 4: Simplify right side
    805,125.20x = 248,886,662,591.51
  5. Step 5: Solve for x
    x = 248,886,662,591.51/805,125.20
  6. Step 6: Final answer
    x = 309,127.90

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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.