Home / 492,888.09-680,253.65-288,989.22

Finding the Fourth Proportional to 492,888.09, 680,253.65 and 288,989.22

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Solution

The fourth proportional to 492,888.09, 680,253.65 and 288,989.22 is: 398,845.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,888.09 : 680,253.65 = 288,989.22 : x
  2. Step 2: Convert to fraction form
    492,888.09/680,253.65 = 288,989.22/x
  3. Step 3: Cross multiply
    492,888.09x = 680,253.65 × 288,989.22
  4. Step 4: Simplify right side
    492,888.09x = 196,585,971,715.65
  5. Step 5: Solve for x
    x = 196,585,971,715.65/492,888.09
  6. Step 6: Final answer
    x = 398,845.04

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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.