Home / 867,398.64-1,196,782.56-499,785.72

Finding the Fourth Proportional to 867,398.64, 1,196,782.56 and 499,785.72

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Solution

The fourth proportional to 867,398.64, 1,196,782.56 and 499,785.72 is: 689,573.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,398.64 : 1,196,782.56 = 499,785.72 : x
  2. Step 2: Convert to fraction form
    867,398.64/1,196,782.56 = 499,785.72/x
  3. Step 3: Cross multiply
    867,398.64x = 1,196,782.56 × 499,785.72
  4. Step 4: Simplify right side
    867,398.64x = 598,134,833,433.04
  5. Step 5: Solve for x
    x = 598,134,833,433.04/867,398.64
  6. Step 6: Final answer
    x = 689,573.17

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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.