Home / 805,085.79-1,207,673.87-258,025.73

Finding the Fourth Proportional to 805,085.79, 1,207,673.87 and 258,025.73

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Solution

The fourth proportional to 805,085.79, 1,207,673.87 and 258,025.73 is: 387,053.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,085.79 : 1,207,673.87 = 258,025.73 : x
  2. Step 2: Convert to fraction form
    805,085.79/1,207,673.87 = 258,025.73/x
  3. Step 3: Cross multiply
    805,085.79x = 1,207,673.87 × 258,025.73
  4. Step 4: Simplify right side
    805,085.79x = 311,610,937,614.74
  5. Step 5: Solve for x
    x = 311,610,937,614.74/805,085.79
  6. Step 6: Final answer
    x = 387,053.09

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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.