Home / 8,487,631.70-12,731,447.55-5,128,399.70

Finding the Fourth Proportional to 8,487,631.70, 12,731,447.55 and 5,128,399.70

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Solution

The fourth proportional to 8,487,631.70, 12,731,447.55 and 5,128,399.70 is: 7,692,599.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487,631.70 : 12,731,447.55 = 5,128,399.70 : x
  2. Step 2: Convert to fraction form
    8,487,631.70/12,731,447.55 = 5,128,399.70/x
  3. Step 3: Cross multiply
    8,487,631.70x = 12,731,447.55 × 5,128,399.70
  4. Step 4: Simplify right side
    8,487,631.70x = 65,291,951,795,985.74
  5. Step 5: Solve for x
    x = 65,291,951,795,985.74/8,487,631.70
  6. Step 6: Final answer
    x = 7,692,599.55

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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.