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Finding the Fourth Proportional to 2,893,290.40, 4,335,788.40 and 2,129,168.80

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Solution

The fourth proportional to 2,893,290.40, 4,335,788.40 and 2,129,168.80 is: 3,190,701.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,893,290.40 : 4,335,788.40 = 2,129,168.80 : x
  2. Step 2: Convert to fraction form
    2,893,290.40/4,335,788.40 = 2,129,168.80/x
  3. Step 3: Cross multiply
    2,893,290.40x = 4,335,788.40 × 2,129,168.80
  4. Step 4: Simplify right side
    2,893,290.40x = 9,231,625,384,681.92
  5. Step 5: Solve for x
    x = 9,231,625,384,681.92/2,893,290.40
  6. Step 6: Final answer
    x = 3,190,701.28

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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.