Home / 1,118,221.10-1,677,331.65-978,253.10

Finding the Fourth Proportional to 1,118,221.10, 1,677,331.65 and 978,253.10

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Solution

The fourth proportional to 1,118,221.10, 1,677,331.65 and 978,253.10 is: 1,467,379.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,221.10 : 1,677,331.65 = 978,253.10 : x
  2. Step 2: Convert to fraction form
    1,118,221.10/1,677,331.65 = 978,253.10/x
  3. Step 3: Cross multiply
    1,118,221.10x = 1,677,331.65 × 978,253.10
  4. Step 4: Simplify right side
    1,118,221.10x = 1,640,854,886,340.62
  5. Step 5: Solve for x
    x = 1,640,854,886,340.62/1,118,221.10
  6. Step 6: Final answer
    x = 1,467,379.65

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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.