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Finding the Fourth Proportional to 1,867,328.60, 2,794,772.10 and 1,643,379.80

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Solution

The fourth proportional to 1,867,328.60, 2,794,772.10 and 1,643,379.80 is: 2,459,594.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867,328.60 : 2,794,772.10 = 1,643,379.80 : x
  2. Step 2: Convert to fraction form
    1,867,328.60/2,794,772.10 = 1,643,379.80/x
  3. Step 3: Cross multiply
    1,867,328.60x = 2,794,772.10 × 1,643,379.80
  4. Step 4: Simplify right side
    1,867,328.60x = 4,592,872,014,743.58
  5. Step 5: Solve for x
    x = 4,592,872,014,743.58/1,867,328.60
  6. Step 6: Final answer
    x = 2,459,594.96

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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.