Home / 776,886.40-1,165,329.60-215,920.90

Finding the Fourth Proportional to 776,886.40, 1,165,329.60 and 215,920.90

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Solution

The fourth proportional to 776,886.40, 1,165,329.60 and 215,920.90 is: 323,881.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,886.40 : 1,165,329.60 = 215,920.90 : x
  2. Step 2: Convert to fraction form
    776,886.40/1,165,329.60 = 215,920.90/x
  3. Step 3: Cross multiply
    776,886.40x = 1,165,329.60 × 215,920.90
  4. Step 4: Simplify right side
    776,886.40x = 251,619,016,028.64
  5. Step 5: Solve for x
    x = 251,619,016,028.64/776,886.40
  6. Step 6: Final answer
    x = 323,881.35

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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.