Home / 698,578.50-1,047,121.71-398,412.75

Finding the Fourth Proportional to 698,578.50, 1,047,121.71 and 398,412.75

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Solution

The fourth proportional to 698,578.50, 1,047,121.71 and 398,412.75 is: 597,193.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,578.50 : 1,047,121.71 = 398,412.75 : x
  2. Step 2: Convert to fraction form
    698,578.50/1,047,121.71 = 398,412.75/x
  3. Step 3: Cross multiply
    698,578.50x = 1,047,121.71 × 398,412.75
  4. Step 4: Simplify right side
    698,578.50x = 417,186,640,065.80
  5. Step 5: Solve for x
    x = 417,186,640,065.80/698,578.50
  6. Step 6: Final answer
    x = 597,193.64

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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.