Home / 856,843.40-1,285,265.10-502,257.80

Finding the Fourth Proportional to 856,843.40, 1,285,265.10 and 502,257.80

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Solution

The fourth proportional to 856,843.40, 1,285,265.10 and 502,257.80 is: 753,386.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,843.40 : 1,285,265.10 = 502,257.80 : x
  2. Step 2: Convert to fraction form
    856,843.40/1,285,265.10 = 502,257.80/x
  3. Step 3: Cross multiply
    856,843.40x = 1,285,265.10 × 502,257.80
  4. Step 4: Simplify right side
    856,843.40x = 645,534,421,542.78
  5. Step 5: Solve for x
    x = 645,534,421,542.78/856,843.40
  6. Step 6: Final answer
    x = 753,386.70

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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.