Home / 842,720.32-1,264,206.66-310,200.76

Finding the Fourth Proportional to 842,720.32, 1,264,206.66 and 310,200.76

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Solution

The fourth proportional to 842,720.32, 1,264,206.66 and 310,200.76 is: 465,347.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,720.32 : 1,264,206.66 = 310,200.76 : x
  2. Step 2: Convert to fraction form
    842,720.32/1,264,206.66 = 310,200.76/x
  3. Step 3: Cross multiply
    842,720.32x = 1,264,206.66 × 310,200.76
  4. Step 4: Simplify right side
    842,720.32x = 392,157,866,729.06
  5. Step 5: Solve for x
    x = 392,157,866,729.06/842,720.32
  6. Step 6: Final answer
    x = 465,347.59

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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.