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Finding the Fourth Proportional to 8,578,486.60, 12,867,729.90 and 2,898,628.90

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Solution

The fourth proportional to 8,578,486.60, 12,867,729.90 and 2,898,628.90 is: 4,347,943.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,578,486.60 : 12,867,729.90 = 2,898,628.90 : x
  2. Step 2: Convert to fraction form
    8,578,486.60/12,867,729.90 = 2,898,628.90/x
  3. Step 3: Cross multiply
    8,578,486.60x = 12,867,729.90 × 2,898,628.90
  4. Step 4: Simplify right side
    8,578,486.60x = 37,298,773,765,534.11
  5. Step 5: Solve for x
    x = 37,298,773,765,534.11/8,578,486.60
  6. Step 6: Final answer
    x = 4,347,943.35

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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.