Home / 464,336.09-640,512.31-291,981.21

Finding the Fourth Proportional to 464,336.09, 640,512.31 and 291,981.21

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Solution

The fourth proportional to 464,336.09, 640,512.31 and 291,981.21 is: 402,763.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,336.09 : 640,512.31 = 291,981.21 : x
  2. Step 2: Convert to fraction form
    464,336.09/640,512.31 = 291,981.21/x
  3. Step 3: Cross multiply
    464,336.09x = 640,512.31 × 291,981.21
  4. Step 4: Simplify right side
    464,336.09x = 187,017,556,709.29
  5. Step 5: Solve for x
    x = 187,017,556,709.29/464,336.09
  6. Step 6: Final answer
    x = 402,763.34

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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.