Home / 886,983.78-1,331,000.55-326,411.94

Finding the Fourth Proportional to 886,983.78, 1,331,000.55 and 326,411.94

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Solution

The fourth proportional to 886,983.78, 1,331,000.55 and 326,411.94 is: 489,811.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,983.78 : 1,331,000.55 = 326,411.94 : x
  2. Step 2: Convert to fraction form
    886,983.78/1,331,000.55 = 326,411.94/x
  3. Step 3: Cross multiply
    886,983.78x = 1,331,000.55 × 326,411.94
  4. Step 4: Simplify right side
    886,983.78x = 434,454,471,666.57
  5. Step 5: Solve for x
    x = 434,454,471,666.57/886,983.78
  6. Step 6: Final answer
    x = 489,811.07

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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.