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Finding the Fourth Proportional to 6,464,562.56, 8,920,932.32 and 3,563,886.40

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Solution

The fourth proportional to 6,464,562.56, 8,920,932.32 and 3,563,886.40 is: 4,918,072.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,464,562.56 : 8,920,932.32 = 3,563,886.40 : x
  2. Step 2: Convert to fraction form
    6,464,562.56/8,920,932.32 = 3,563,886.40/x
  3. Step 3: Cross multiply
    6,464,562.56x = 8,920,932.32 × 3,563,886.40
  4. Step 4: Simplify right side
    6,464,562.56x = 31,793,189,370,568.45
  5. Step 5: Solve for x
    x = 31,793,189,370,568.45/6,464,562.56
  6. Step 6: Final answer
    x = 4,918,072.81

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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.