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Finding the Fourth Proportional to 8,903,390.40, 13,355,474.40 and 2,919,758.40

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Solution

The fourth proportional to 8,903,390.40, 13,355,474.40 and 2,919,758.40 is: 4,379,765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903,390.40 : 13,355,474.40 = 2,919,758.40 : x
  2. Step 2: Convert to fraction form
    8,903,390.40/13,355,474.40 = 2,919,758.40/x
  3. Step 3: Cross multiply
    8,903,390.40x = 13,355,474.40 × 2,919,758.40
  4. Step 4: Simplify right side
    8,903,390.40x = 38,994,758,565,384.96
  5. Step 5: Solve for x
    x = 38,994,758,565,384.96/8,903,390.40
  6. Step 6: Final answer
    x = 4,379,765.10

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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.