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Finding the Fourth Proportional to 5,260,000.90, 7,890,001.35 and 3,020,512.90

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Solution

The fourth proportional to 5,260,000.90, 7,890,001.35 and 3,020,512.90 is: 4,530,769.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,260,000.90 : 7,890,001.35 = 3,020,512.90 : x
  2. Step 2: Convert to fraction form
    5,260,000.90/7,890,001.35 = 3,020,512.90/x
  3. Step 3: Cross multiply
    5,260,000.90x = 7,890,001.35 × 3,020,512.90
  4. Step 4: Simplify right side
    5,260,000.90x = 23,831,850,858,692.41
  5. Step 5: Solve for x
    x = 23,831,850,858,692.41/5,260,000.90
  6. Step 6: Final answer
    x = 4,530,769.35

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Similar ratio
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1.5x scale

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.