Home / 872,822.40-1,309,233.60-311,875.20

Finding the Fourth Proportional to 872,822.40, 1,309,233.60 and 311,875.20

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Solution

The fourth proportional to 872,822.40, 1,309,233.60 and 311,875.20 is: 467,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,822.40 : 1,309,233.60 = 311,875.20 : x
  2. Step 2: Convert to fraction form
    872,822.40/1,309,233.60 = 311,875.20/x
  3. Step 3: Cross multiply
    872,822.40x = 1,309,233.60 × 311,875.20
  4. Step 4: Simplify right side
    872,822.40x = 408,317,490,846.72
  5. Step 5: Solve for x
    x = 408,317,490,846.72/872,822.40
  6. Step 6: Final answer
    x = 467,812.80

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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.