Home / 820,213.80-1,231,632.90-620,759.40

Finding the Fourth Proportional to 820,213.80, 1,231,632.90 and 620,759.40

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Solution

The fourth proportional to 820,213.80, 1,231,632.90 and 620,759.40 is: 932,132.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,213.80 : 1,231,632.90 = 620,759.40 : x
  2. Step 2: Convert to fraction form
    820,213.80/1,231,632.90 = 620,759.40/x
  3. Step 3: Cross multiply
    820,213.80x = 1,231,632.90 × 620,759.40
  4. Step 4: Simplify right side
    820,213.80x = 764,547,700,024.26
  5. Step 5: Solve for x
    x = 764,547,700,024.26/820,213.80
  6. Step 6: Final answer
    x = 932,132.21

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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.