Home / 1,387,690.25-2,083,423.75-780,907.23

Finding the Fourth Proportional to 1,387,690.25, 2,083,423.75 and 780,907.23

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Solution

The fourth proportional to 1,387,690.25, 2,083,423.75 and 780,907.23 is: 1,172,423.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,690.25 : 2,083,423.75 = 780,907.23 : x
  2. Step 2: Convert to fraction form
    1,387,690.25/2,083,423.75 = 780,907.23/x
  3. Step 3: Cross multiply
    1,387,690.25x = 2,083,423.75 × 780,907.23
  4. Step 4: Simplify right side
    1,387,690.25x = 1,626,960,676,689.54
  5. Step 5: Solve for x
    x = 1,626,960,676,689.54/1,387,690.25
  6. Step 6: Final answer
    x = 1,172,423.51

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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.