Home / 1,423,810.80-1,964,859.72-779,230.68

Finding the Fourth Proportional to 1,423,810.80, 1,964,859.72 and 779,230.68

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Solution

The fourth proportional to 1,423,810.80, 1,964,859.72 and 779,230.68 is: 1,075,338.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,810.80 : 1,964,859.72 = 779,230.68 : x
  2. Step 2: Convert to fraction form
    1,423,810.80/1,964,859.72 = 779,230.68/x
  3. Step 3: Cross multiply
    1,423,810.80x = 1,964,859.72 × 779,230.68
  4. Step 4: Simplify right side
    1,423,810.80x = 1,531,078,975,720.21
  5. Step 5: Solve for x
    x = 1,531,078,975,720.21/1,423,810.80
  6. Step 6: Final answer
    x = 1,075,338.78

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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.