Home / 498,818.25-688,386.20-272,478.33

Finding the Fourth Proportional to 498,818.25, 688,386.20 and 272,478.33

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Solution

The fourth proportional to 498,818.25, 688,386.20 and 272,478.33 is: 376,029.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,818.25 : 688,386.20 = 272,478.33 : x
  2. Step 2: Convert to fraction form
    498,818.25/688,386.20 = 272,478.33/x
  3. Step 3: Cross multiply
    498,818.25x = 688,386.20 × 272,478.33
  4. Step 4: Simplify right side
    498,818.25x = 187,570,320,808.65
  5. Step 5: Solve for x
    x = 187,570,320,808.65/498,818.25
  6. Step 6: Final answer
    x = 376,029.39

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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.