Home / 862,720.32-1,190,555.34-480,738.90

Finding the Fourth Proportional to 862,720.32, 1,190,555.34 and 480,738.90

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Solution

The fourth proportional to 862,720.32, 1,190,555.34 and 480,738.90 is: 663,420.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,720.32 : 1,190,555.34 = 480,738.90 : x
  2. Step 2: Convert to fraction form
    862,720.32/1,190,555.34 = 480,738.90/x
  3. Step 3: Cross multiply
    862,720.32x = 1,190,555.34 × 480,738.90
  4. Step 4: Simplify right side
    862,720.32x = 572,346,264,540.73
  5. Step 5: Solve for x
    x = 572,346,264,540.73/862,720.32
  6. Step 6: Final answer
    x = 663,420.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.