Home / 787,117.70-1,180,676.55-472,189.70

Finding the Fourth Proportional to 787,117.70, 1,180,676.55 and 472,189.70

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Solution

The fourth proportional to 787,117.70, 1,180,676.55 and 472,189.70 is: 708,284.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,117.70 : 1,180,676.55 = 472,189.70 : x
  2. Step 2: Convert to fraction form
    787,117.70/1,180,676.55 = 472,189.70/x
  3. Step 3: Cross multiply
    787,117.70x = 1,180,676.55 × 472,189.70
  4. Step 4: Simplify right side
    787,117.70x = 557,503,305,941.54
  5. Step 5: Solve for x
    x = 557,503,305,941.54/787,117.70
  6. Step 6: Final answer
    x = 708,284.55

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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.