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Finding the Fourth Proportional to 6,464,314.72, 8,920,823.08 and 3,563,809.40

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Solution

The fourth proportional to 6,464,314.72, 8,920,823.08 and 3,563,809.40 is: 4,918,094.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,464,314.72 : 8,920,823.08 = 3,563,809.40 : x
  2. Step 2: Convert to fraction form
    6,464,314.72/8,920,823.08 = 3,563,809.40/x
  3. Step 3: Cross multiply
    6,464,314.72x = 8,920,823.08 × 3,563,809.40
  4. Step 4: Simplify right side
    6,464,314.72x = 31,792,113,148,240.95
  5. Step 5: Solve for x
    x = 31,792,113,148,240.95/6,464,314.72
  6. Step 6: Final answer
    x = 4,918,094.88

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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.