Home / 862,773.81-1,190,716.38-518,721.72

Finding the Fourth Proportional to 862,773.81, 1,190,716.38 and 518,721.72

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Solution

The fourth proportional to 862,773.81, 1,190,716.38 and 518,721.72 is: 715,889.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,773.81 : 1,190,716.38 = 518,721.72 : x
  2. Step 2: Convert to fraction form
    862,773.81/1,190,716.38 = 518,721.72/x
  3. Step 3: Cross multiply
    862,773.81x = 1,190,716.38 × 518,721.72
  4. Step 4: Simplify right side
    862,773.81x = 617,650,448,665.77
  5. Step 5: Solve for x
    x = 617,650,448,665.77/862,773.81
  6. Step 6: Final answer
    x = 715,889.20

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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.