Home / 1,103,002.79-1,521,907.70-643,909.01

Finding the Fourth Proportional to 1,103,002.79, 1,521,907.70 and 643,909.01

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Solution

The fourth proportional to 1,103,002.79, 1,521,907.70 and 643,909.01 is: 888,456.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103,002.79 : 1,521,907.70 = 643,909.01 : x
  2. Step 2: Convert to fraction form
    1,103,002.79/1,521,907.70 = 643,909.01/x
  3. Step 3: Cross multiply
    1,103,002.79x = 1,521,907.70 × 643,909.01
  4. Step 4: Simplify right side
    1,103,002.79x = 979,970,069,589.29
  5. Step 5: Solve for x
    x = 979,970,069,589.29/1,103,002.79
  6. Step 6: Final answer
    x = 888,456.57

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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.