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Finding the Fourth Proportional to 983,406.80, 1,474,915.80 and 477,966.80

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Solution

The fourth proportional to 983,406.80, 1,474,915.80 and 477,966.80 is: 716,855.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    983,406.80 : 1,474,915.80 = 477,966.80 : x
  2. Step 2: Convert to fraction form
    983,406.80/1,474,915.80 = 477,966.80/x
  3. Step 3: Cross multiply
    983,406.80x = 1,474,915.80 × 477,966.80
  4. Step 4: Simplify right side
    983,406.80x = 704,960,785,195.44
  5. Step 5: Solve for x
    x = 704,960,785,195.44/983,406.80
  6. Step 6: Final answer
    x = 716,855.72

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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.