Home / 831,811.72-1,247,717.40-326,610.76

Finding the Fourth Proportional to 831,811.72, 1,247,717.40 and 326,610.76

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Solution

The fourth proportional to 831,811.72, 1,247,717.40 and 326,610.76 is: 489,916.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,811.72 : 1,247,717.40 = 326,610.76 : x
  2. Step 2: Convert to fraction form
    831,811.72/1,247,717.40 = 326,610.76/x
  3. Step 3: Cross multiply
    831,811.72x = 1,247,717.40 × 326,610.76
  4. Step 4: Simplify right side
    831,811.72x = 407,517,928,279.22
  5. Step 5: Solve for x
    x = 407,517,928,279.22/831,811.72
  6. Step 6: Final answer
    x = 489,916.07

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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.