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Finding the Fourth Proportional to 1,786,569.38, 2,678,346.81 and 774,929.71

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Solution

The fourth proportional to 1,786,569.38, 2,678,346.81 and 774,929.71 is: 1,161,740.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,569.38 : 2,678,346.81 = 774,929.71 : x
  2. Step 2: Convert to fraction form
    1,786,569.38/2,678,346.81 = 774,929.71/x
  3. Step 3: Cross multiply
    1,786,569.38x = 2,678,346.81 × 774,929.71
  4. Step 4: Simplify right side
    1,786,569.38x = 2,075,530,503,360.99
  5. Step 5: Solve for x
    x = 2,075,530,503,360.99/1,786,569.38
  6. Step 6: Final answer
    x = 1,161,740.78

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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.