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Finding the Fourth Proportional to 1,423,744.93, 1,964,741.73 and 779,152.19

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Solution

The fourth proportional to 1,423,744.93, 1,964,741.73 and 779,152.19 is: 1,075,215.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,744.93 : 1,964,741.73 = 779,152.19 : x
  2. Step 2: Convert to fraction form
    1,423,744.93/1,964,741.73 = 779,152.19/x
  3. Step 3: Cross multiply
    1,423,744.93x = 1,964,741.73 × 779,152.19
  4. Step 4: Simplify right side
    1,423,744.93x = 1,530,832,821,713.89
  5. Step 5: Solve for x
    x = 1,530,832,821,713.89/1,423,744.93
  6. Step 6: Final answer
    x = 1,075,215.65

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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.