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Finding the Fourth Proportional to 611,863.60, 917,212.20 and 476,852.80

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Solution

The fourth proportional to 611,863.60, 917,212.20 and 476,852.80 is: 714,824.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,863.60 : 917,212.20 = 476,852.80 : x
  2. Step 2: Convert to fraction form
    611,863.60/917,212.20 = 476,852.80/x
  3. Step 3: Cross multiply
    611,863.60x = 917,212.20 × 476,852.80
  4. Step 4: Simplify right side
    611,863.60x = 437,375,205,764.16
  5. Step 5: Solve for x
    x = 437,375,205,764.16/611,863.60
  6. Step 6: Final answer
    x = 714,824.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.