Home / 9,121,403.79-12,587,538.20-4,991,435.83

Finding the Fourth Proportional to 9,121,403.79, 12,587,538.20 and 4,991,435.83

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Solution

The fourth proportional to 9,121,403.79, 12,587,538.20 and 4,991,435.83 is: 6,888,181.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121,403.79 : 12,587,538.20 = 4,991,435.83 : x
  2. Step 2: Convert to fraction form
    9,121,403.79/12,587,538.20 = 4,991,435.83/x
  3. Step 3: Cross multiply
    9,121,403.79x = 12,587,538.20 × 4,991,435.83
  4. Step 4: Simplify right side
    9,121,403.79x = 62,829,889,182,973.70
  5. Step 5: Solve for x
    x = 62,829,889,182,973.70/9,121,403.79
  6. Step 6: Final answer
    x = 6,888,181.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.