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Finding the Fourth Proportional to 677,764.60, 1,017,813.30 and 656,769.40

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Solution

The fourth proportional to 677,764.60, 1,017,813.30 and 656,769.40 is: 986,284.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,764.60 : 1,017,813.30 = 656,769.40 : x
  2. Step 2: Convert to fraction form
    677,764.60/1,017,813.30 = 656,769.40/x
  3. Step 3: Cross multiply
    677,764.60x = 1,017,813.30 × 656,769.40
  4. Step 4: Simplify right side
    677,764.60x = 668,468,630,353.02
  5. Step 5: Solve for x
    x = 668,468,630,353.02/677,764.60
  6. Step 6: Final answer
    x = 986,284.37

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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.