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Finding the Fourth Proportional to 898,078, 1,239,349.28 and 495,670

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Solution

The fourth proportional to 898,078, 1,239,349.28 and 495,670 is: 684,025.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,078 : 1,239,349.28 = 495,670 : x
  2. Step 2: Convert to fraction form
    898,078/1,239,349.28 = 495,670/x
  3. Step 3: Cross multiply
    898,078x = 1,239,349.28 × 495,670
  4. Step 4: Simplify right side
    898,078x = 614,308,257,617.60
  5. Step 5: Solve for x
    x = 614,308,257,617.60/898,078
  6. Step 6: Final answer
    x = 684,025.51

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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.