Home / 679,705.74-1,019,492.49-206,395.20

Finding the Fourth Proportional to 679,705.74, 1,019,492.49 and 206,395.20

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Solution

The fourth proportional to 679,705.74, 1,019,492.49 and 206,395.20 is: 309,572.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,705.74 : 1,019,492.49 = 206,395.20 : x
  2. Step 2: Convert to fraction form
    679,705.74/1,019,492.49 = 206,395.20/x
  3. Step 3: Cross multiply
    679,705.74x = 1,019,492.49 × 206,395.20
  4. Step 4: Simplify right side
    679,705.74x = 210,418,356,372.05
  5. Step 5: Solve for x
    x = 210,418,356,372.05/679,705.74
  6. Step 6: Final answer
    x = 309,572.72

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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.