Home / 464,391.28-640,865.32-257,663.55

Finding the Fourth Proportional to 464,391.28, 640,865.32 and 257,663.55

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Solution

The fourth proportional to 464,391.28, 640,865.32 and 257,663.55 is: 355,578.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,391.28 : 640,865.32 = 257,663.55 : x
  2. Step 2: Convert to fraction form
    464,391.28/640,865.32 = 257,663.55/x
  3. Step 3: Cross multiply
    464,391.28x = 640,865.32 × 257,663.55
  4. Step 4: Simplify right side
    464,391.28x = 165,127,632,778.93
  5. Step 5: Solve for x
    x = 165,127,632,778.93/464,391.28
  6. Step 6: Final answer
    x = 355,578.67

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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.