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Finding the Fourth Proportional to 640,166.16, 883,418.94 and 349,771.50

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Solution

The fourth proportional to 640,166.16, 883,418.94 and 349,771.50 is: 482,679.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,166.16 : 883,418.94 = 349,771.50 : x
  2. Step 2: Convert to fraction form
    640,166.16/883,418.94 = 349,771.50/x
  3. Step 3: Cross multiply
    640,166.16x = 883,418.94 × 349,771.50
  4. Step 4: Simplify right side
    640,166.16x = 308,994,767,772.21
  5. Step 5: Solve for x
    x = 308,994,767,772.21/640,166.16
  6. Step 6: Final answer
    x = 482,679.01

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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.