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Finding the Fourth Proportional to 640,846.58, 884,378.13 and 354,361.46

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Solution

The fourth proportional to 640,846.58, 884,378.13 and 354,361.46 is: 489,024.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,846.58 : 884,378.13 = 354,361.46 : x
  2. Step 2: Convert to fraction form
    640,846.58/884,378.13 = 354,361.46/x
  3. Step 3: Cross multiply
    640,846.58x = 884,378.13 × 354,361.46
  4. Step 4: Simplify right side
    640,846.58x = 313,389,525,338.87
  5. Step 5: Solve for x
    x = 313,389,525,338.87/640,846.58
  6. Step 6: Final answer
    x = 489,024.26

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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.