Home / 899,392.80-1,241,178.36-491,511.90

Finding the Fourth Proportional to 899,392.80, 1,241,178.36 and 491,511.90

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Solution

The fourth proportional to 899,392.80, 1,241,178.36 and 491,511.90 is: 678,295.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,392.80 : 1,241,178.36 = 491,511.90 : x
  2. Step 2: Convert to fraction form
    899,392.80/1,241,178.36 = 491,511.90/x
  3. Step 3: Cross multiply
    899,392.80x = 1,241,178.36 × 491,511.90
  4. Step 4: Simplify right side
    899,392.80x = 610,053,933,962.48
  5. Step 5: Solve for x
    x = 610,053,933,962.48/899,392.80
  6. Step 6: Final answer
    x = 678,295.33

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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.