Home / 920,087.79-1,269,632.09-678,500.43

Finding the Fourth Proportional to 920,087.79, 1,269,632.09 and 678,500.43

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Solution

The fourth proportional to 920,087.79, 1,269,632.09 and 678,500.43 is: 936,264.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,087.79 : 1,269,632.09 = 678,500.43 : x
  2. Step 2: Convert to fraction form
    920,087.79/1,269,632.09 = 678,500.43/x
  3. Step 3: Cross multiply
    920,087.79x = 1,269,632.09 × 678,500.43
  4. Step 4: Simplify right side
    920,087.79x = 861,445,920,703.05
  5. Step 5: Solve for x
    x = 861,445,920,703.05/920,087.79
  6. Step 6: Final answer
    x = 936,264.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.