Home / 861,488.65-1,188,923.03-498,918.88

Finding the Fourth Proportional to 861,488.65, 1,188,923.03 and 498,918.88

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Solution

The fourth proportional to 861,488.65, 1,188,923.03 and 498,918.88 is: 688,547.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,488.65 : 1,188,923.03 = 498,918.88 : x
  2. Step 2: Convert to fraction form
    861,488.65/1,188,923.03 = 498,918.88/x
  3. Step 3: Cross multiply
    861,488.65x = 1,188,923.03 × 498,918.88
  4. Step 4: Simplify right side
    861,488.65x = 593,176,146,533.81
  5. Step 5: Solve for x
    x = 593,176,146,533.81/861,488.65
  6. Step 6: Final answer
    x = 688,547.84

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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.