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Finding the Fourth Proportional to 5,603,812.80, 8,405,719.20 and 1,817,246.40

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Solution

The fourth proportional to 5,603,812.80, 8,405,719.20 and 1,817,246.40 is: 2,725,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,603,812.80 : 8,405,719.20 = 1,817,246.40 : x
  2. Step 2: Convert to fraction form
    5,603,812.80/8,405,719.20 = 1,817,246.40/x
  3. Step 3: Cross multiply
    5,603,812.80x = 8,405,719.20 × 1,817,246.40
  4. Step 4: Simplify right side
    5,603,812.80x = 15,275,262,955,610.88
  5. Step 5: Solve for x
    x = 15,275,262,955,610.88/5,603,812.80
  6. Step 6: Final answer
    x = 2,725,869.60

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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.