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Finding the Fourth Proportional to 8,991,294.60, 13,486,941.90 and 8,896,816.20

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Solution

The fourth proportional to 8,991,294.60, 13,486,941.90 and 8,896,816.20 is: 13,345,224.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991,294.60 : 13,486,941.90 = 8,896,816.20 : x
  2. Step 2: Convert to fraction form
    8,991,294.60/13,486,941.90 = 8,896,816.20/x
  3. Step 3: Cross multiply
    8,991,294.60x = 13,486,941.90 × 8,896,816.20
  4. Step 4: Simplify right side
    8,991,294.60x = 119,990,843,184,378.77
  5. Step 5: Solve for x
    x = 119,990,843,184,378.77/8,991,294.60
  6. Step 6: Final answer
    x = 13,345,224.30

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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.