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Finding the Fourth Proportional to 6,428,166.62, 8,870,978.12 and 3,527,827.36

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Solution

The fourth proportional to 6,428,166.62, 8,870,978.12 and 3,527,827.36 is: 4,868,461.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428,166.62 : 8,870,978.12 = 3,527,827.36 : x
  2. Step 2: Convert to fraction form
    6,428,166.62/8,870,978.12 = 3,527,827.36/x
  3. Step 3: Cross multiply
    6,428,166.62x = 8,870,978.12 × 3,527,827.36
  4. Step 4: Simplify right side
    6,428,166.62x = 31,295,279,281,880.78
  5. Step 5: Solve for x
    x = 31,295,279,281,880.78/6,428,166.62
  6. Step 6: Final answer
    x = 4,868,461.13

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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.