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Finding the Fourth Proportional to 2,812,009, 4,218,732.78 and 817,465

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Solution

The fourth proportional to 2,812,009, 4,218,732.78 and 817,465 is: 1,226,406.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812,009 : 4,218,732.78 = 817,465 : x
  2. Step 2: Convert to fraction form
    2,812,009/4,218,732.78 = 817,465/x
  3. Step 3: Cross multiply
    2,812,009x = 4,218,732.78 × 817,465
  4. Step 4: Simplify right side
    2,812,009x = 3,448,666,392,002.70
  5. Step 5: Solve for x
    x = 3,448,666,392,002.70/2,812,009
  6. Step 6: Final answer
    x = 1,226,406.60

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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.