Home / 654,531.20-981,796.80-339,603.20

Finding the Fourth Proportional to 654,531.20, 981,796.80 and 339,603.20

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Solution

The fourth proportional to 654,531.20, 981,796.80 and 339,603.20 is: 509,404.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,531.20 : 981,796.80 = 339,603.20 : x
  2. Step 2: Convert to fraction form
    654,531.20/981,796.80 = 339,603.20/x
  3. Step 3: Cross multiply
    654,531.20x = 981,796.80 × 339,603.20
  4. Step 4: Simplify right side
    654,531.20x = 333,421,335,029.76
  5. Step 5: Solve for x
    x = 333,421,335,029.76/654,531.20
  6. Step 6: Final answer
    x = 509,404.80

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.