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Finding the Fourth Proportional to 866,775.40, 1,299,644.70 and 446,871.40

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Solution

The fourth proportional to 866,775.40, 1,299,644.70 and 446,871.40 is: 670,039.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,775.40 : 1,299,644.70 = 446,871.40 : x
  2. Step 2: Convert to fraction form
    866,775.40/1,299,644.70 = 446,871.40/x
  3. Step 3: Cross multiply
    866,775.40x = 1,299,644.70 × 446,871.40
  4. Step 4: Simplify right side
    866,775.40x = 580,774,046,591.58
  5. Step 5: Solve for x
    x = 580,774,046,591.58/866,775.40
  6. Step 6: Final answer
    x = 670,039.84

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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.