Home / 778,317.40-1,167,389.70-217,408.60

Finding the Fourth Proportional to 778,317.40, 1,167,389.70 and 217,408.60

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Solution

The fourth proportional to 778,317.40, 1,167,389.70 and 217,408.60 is: 326,088.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,317.40 : 1,167,389.70 = 217,408.60 : x
  2. Step 2: Convert to fraction form
    778,317.40/1,167,389.70 = 217,408.60/x
  3. Step 3: Cross multiply
    778,317.40x = 1,167,389.70 × 217,408.60
  4. Step 4: Simplify right side
    778,317.40x = 253,800,560,331.42
  5. Step 5: Solve for x
    x = 253,800,560,331.42/778,317.40
  6. Step 6: Final answer
    x = 326,088.77

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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.