Home / 861,487.65-1,188,921.65-498,917.88

Finding the Fourth Proportional to 861,487.65, 1,188,921.65 and 498,917.88

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Solution

The fourth proportional to 861,487.65, 1,188,921.65 and 498,917.88 is: 688,546.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,487.65 : 1,188,921.65 = 498,917.88 : x
  2. Step 2: Convert to fraction form
    861,487.65/1,188,921.65 = 498,917.88/x
  3. Step 3: Cross multiply
    861,487.65x = 1,188,921.65 × 498,917.88
  4. Step 4: Simplify right side
    861,487.65x = 593,174,266,609.51
  5. Step 5: Solve for x
    x = 593,174,266,609.51/861,487.65
  6. Step 6: Final answer
    x = 688,546.45

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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.