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Finding the Fourth Proportional to 2,938,897.60, 4,408,346.40 and 2,920,235.20

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Solution

The fourth proportional to 2,938,897.60, 4,408,346.40 and 2,920,235.20 is: 4,380,352.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938,897.60 : 4,408,346.40 = 2,920,235.20 : x
  2. Step 2: Convert to fraction form
    2,938,897.60/4,408,346.40 = 2,920,235.20/x
  3. Step 3: Cross multiply
    2,938,897.60x = 4,408,346.40 × 2,920,235.20
  4. Step 4: Simplify right side
    2,938,897.60x = 12,873,408,331,073.28
  5. Step 5: Solve for x
    x = 12,873,408,331,073.28/2,938,897.60
  6. Step 6: Final answer
    x = 4,380,352.80

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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.