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Finding the Fourth Proportional to 487,209.60, 730,814.40 and 277,257.60

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Solution

The fourth proportional to 487,209.60, 730,814.40 and 277,257.60 is: 415,886.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,209.60 : 730,814.40 = 277,257.60 : x
  2. Step 2: Convert to fraction form
    487,209.60/730,814.40 = 277,257.60/x
  3. Step 3: Cross multiply
    487,209.60x = 730,814.40 × 277,257.60
  4. Step 4: Simplify right side
    487,209.60x = 202,623,846,589.44
  5. Step 5: Solve for x
    x = 202,623,846,589.44/487,209.60
  6. Step 6: Final answer
    x = 415,886.40

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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.