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Finding the Fourth Proportional to 1,888,766.60, 2,606,421.90 and 1,029,308.30

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Solution

The fourth proportional to 1,888,766.60, 2,606,421.90 and 1,029,308.30 is: 1,420,404.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888,766.60 : 2,606,421.90 = 1,029,308.30 : x
  2. Step 2: Convert to fraction form
    1,888,766.60/2,606,421.90 = 1,029,308.30/x
  3. Step 3: Cross multiply
    1,888,766.60x = 2,606,421.90 × 1,029,308.30
  4. Step 4: Simplify right side
    1,888,766.60x = 2,682,811,694,971.77
  5. Step 5: Solve for x
    x = 2,682,811,694,971.77/1,888,766.60
  6. Step 6: Final answer
    x = 1,420,404.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.