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Finding the Fourth Proportional to 6,390,616.06, 8,819,005.30 and 3,490,007.68

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Solution

The fourth proportional to 6,390,616.06, 8,819,005.30 and 3,490,007.68 is: 4,816,186.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390,616.06 : 8,819,005.30 = 3,490,007.68 : x
  2. Step 2: Convert to fraction form
    6,390,616.06/8,819,005.30 = 3,490,007.68/x
  3. Step 3: Cross multiply
    6,390,616.06x = 8,819,005.30 × 3,490,007.68
  4. Step 4: Simplify right side
    6,390,616.06x = 30,778,396,226,960.71
  5. Step 5: Solve for x
    x = 30,778,396,226,960.71/6,390,616.06
  6. Step 6: Final answer
    x = 4,816,186.10

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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.