Home / 680,934.10-1,021,401.15-207,618.70

Finding the Fourth Proportional to 680,934.10, 1,021,401.15 and 207,618.70

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Solution

The fourth proportional to 680,934.10, 1,021,401.15 and 207,618.70 is: 311,428.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,934.10 : 1,021,401.15 = 207,618.70 : x
  2. Step 2: Convert to fraction form
    680,934.10/1,021,401.15 = 207,618.70/x
  3. Step 3: Cross multiply
    680,934.10x = 1,021,401.15 × 207,618.70
  4. Step 4: Simplify right side
    680,934.10x = 212,061,978,941.51
  5. Step 5: Solve for x
    x = 212,061,978,941.51/680,934.10
  6. Step 6: Final answer
    x = 311,428.05

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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.