Home / 862,155.12-1,190,935.80-781,673.52

Finding the Fourth Proportional to 862,155.12, 1,190,935.80 and 781,673.52

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Solution

The fourth proportional to 862,155.12, 1,190,935.80 and 781,673.52 is: 1,079,762.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,155.12 : 1,190,935.80 = 781,673.52 : x
  2. Step 2: Convert to fraction form
    862,155.12/1,190,935.80 = 781,673.52/x
  3. Step 3: Cross multiply
    862,155.12x = 1,190,935.80 × 781,673.52
  4. Step 4: Simplify right side
    862,155.12x = 930,922,978,880.02
  5. Step 5: Solve for x
    x = 930,922,978,880.02/862,155.12
  6. Step 6: Final answer
    x = 1,079,762.74

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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.