Home / 815,740.07-1,223,785.20-342,152.51

Finding the Fourth Proportional to 815,740.07, 1,223,785.20 and 342,152.51

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Solution

The fourth proportional to 815,740.07, 1,223,785.20 and 342,152.51 is: 513,302.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,740.07 : 1,223,785.20 = 342,152.51 : x
  2. Step 2: Convert to fraction form
    815,740.07/1,223,785.20 = 342,152.51/x
  3. Step 3: Cross multiply
    815,740.07x = 1,223,785.20 × 342,152.51
  4. Step 4: Simplify right side
    815,740.07x = 418,721,177,880.85
  5. Step 5: Solve for x
    x = 418,721,177,880.85/815,740.07
  6. Step 6: Final answer
    x = 513,302.21

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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.