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Finding the Fourth Proportional to 6,531,639.39, 9,791,978.59 and 2,887,780.96

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Solution

The fourth proportional to 6,531,639.39, 9,791,978.59 and 2,887,780.96 is: 4,329,248.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,531,639.39 : 9,791,978.59 = 2,887,780.96 : x
  2. Step 2: Convert to fraction form
    6,531,639.39/9,791,978.59 = 2,887,780.96/x
  3. Step 3: Cross multiply
    6,531,639.39x = 9,791,978.59 × 2,887,780.96
  4. Step 4: Simplify right side
    6,531,639.39x = 28,277,089,348,779.35
  5. Step 5: Solve for x
    x = 28,277,089,348,779.35/6,531,639.39
  6. Step 6: Final answer
    x = 4,329,248.40

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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.