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Finding the Fourth Proportional to 8,691,813.60, 13,037,720.40 and 4,212,837.60

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Solution

The fourth proportional to 8,691,813.60, 13,037,720.40 and 4,212,837.60 is: 6,319,256.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691,813.60 : 13,037,720.40 = 4,212,837.60 : x
  2. Step 2: Convert to fraction form
    8,691,813.60/13,037,720.40 = 4,212,837.60/x
  3. Step 3: Cross multiply
    8,691,813.60x = 13,037,720.40 × 4,212,837.60
  4. Step 4: Simplify right side
    8,691,813.60x = 54,925,798,719,407.04
  5. Step 5: Solve for x
    x = 54,925,798,719,407.04/8,691,813.60
  6. Step 6: Final answer
    x = 6,319,256.40

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Similar ratio
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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.