Home / 842,719.32-1,264,205.16-310,199.76

Finding the Fourth Proportional to 842,719.32, 1,264,205.16 and 310,199.76

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Solution

The fourth proportional to 842,719.32, 1,264,205.16 and 310,199.76 is: 465,346.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,719.32 : 1,264,205.16 = 310,199.76 : x
  2. Step 2: Convert to fraction form
    842,719.32/1,264,205.16 = 310,199.76/x
  3. Step 3: Cross multiply
    842,719.32x = 1,264,205.16 × 310,199.76
  4. Step 4: Simplify right side
    842,719.32x = 392,156,137,222.76
  5. Step 5: Solve for x
    x = 392,156,137,222.76/842,719.32
  6. Step 6: Final answer
    x = 465,346.09

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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.