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Finding the Fourth Proportional to 487,798.80, 731,698.20 and 277,846.80

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Solution

The fourth proportional to 487,798.80, 731,698.20 and 277,846.80 is: 416,770.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,798.80 : 731,698.20 = 277,846.80 : x
  2. Step 2: Convert to fraction form
    487,798.80/731,698.20 = 277,846.80/x
  3. Step 3: Cross multiply
    487,798.80x = 731,698.20 × 277,846.80
  4. Step 4: Simplify right side
    487,798.80x = 203,300,003,435.76
  5. Step 5: Solve for x
    x = 203,300,003,435.76/487,798.80
  6. Step 6: Final answer
    x = 416,770.20

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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.