Home / 688,986.48-950,888.76-387,180.24

Finding the Fourth Proportional to 688,986.48, 950,888.76 and 387,180.24

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Solution

The fourth proportional to 688,986.48, 950,888.76 and 387,180.24 is: 534,357.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,986.48 : 950,888.76 = 387,180.24 : x
  2. Step 2: Convert to fraction form
    688,986.48/950,888.76 = 387,180.24/x
  3. Step 3: Cross multiply
    688,986.48x = 950,888.76 × 387,180.24
  4. Step 4: Simplify right side
    688,986.48x = 368,165,338,310.10
  5. Step 5: Solve for x
    x = 368,165,338,310.10/688,986.48
  6. Step 6: Final answer
    x = 534,357.86

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Double scale
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Similar ratio
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1.5x scale

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.