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Finding the Fourth Proportional to 640,170.16, 883,424.46 and 349,775.50

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Solution

The fourth proportional to 640,170.16, 883,424.46 and 349,775.50 is: 482,684.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,170.16 : 883,424.46 = 349,775.50 : x
  2. Step 2: Convert to fraction form
    640,170.16/883,424.46 = 349,775.50/x
  3. Step 3: Cross multiply
    640,170.16x = 883,424.46 × 349,775.50
  4. Step 4: Simplify right side
    640,170.16x = 309,000,232,208.73
  5. Step 5: Solve for x
    x = 309,000,232,208.73/640,170.16
  6. Step 6: Final answer
    x = 482,684.53

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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.