Home / 808,780.16-1,213,325.70-310,105.28

Finding the Fourth Proportional to 808,780.16, 1,213,325.70 and 310,105.28

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Solution

The fourth proportional to 808,780.16, 1,213,325.70 and 310,105.28 is: 465,217.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,780.16 : 1,213,325.70 = 310,105.28 : x
  2. Step 2: Convert to fraction form
    808,780.16/1,213,325.70 = 310,105.28/x
  3. Step 3: Cross multiply
    808,780.16x = 1,213,325.70 × 310,105.28
  4. Step 4: Simplify right side
    808,780.16x = 376,258,705,929.70
  5. Step 5: Solve for x
    x = 376,258,705,929.70/808,780.16
  6. Step 6: Final answer
    x = 465,217.53

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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.