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Finding the Fourth Proportional to 8,809,868.70, 13,211,692.65 and 3,130,278.30

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Solution

The fourth proportional to 8,809,868.70, 13,211,692.65 and 3,130,278.30 is: 4,694,312.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809,868.70 : 13,211,692.65 = 3,130,278.30 : x
  2. Step 2: Convert to fraction form
    8,809,868.70/13,211,692.65 = 3,130,278.30/x
  3. Step 3: Cross multiply
    8,809,868.70x = 13,211,692.65 × 3,130,278.30
  4. Step 4: Simplify right side
    8,809,868.70x = 41,356,274,808,564.49
  5. Step 5: Solve for x
    x = 41,356,274,808,564.49/8,809,868.70
  6. Step 6: Final answer
    x = 4,694,312.28

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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.