Home / 7,158,783-9,879,122.16-3,939,519

Finding the Fourth Proportional to 7,158,783, 9,879,122.16 and 3,939,519

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Solution

The fourth proportional to 7,158,783, 9,879,122.16 and 3,939,519 is: 5,436,537.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158,783 : 9,879,122.16 = 3,939,519 : x
  2. Step 2: Convert to fraction form
    7,158,783/9,879,122.16 = 3,939,519/x
  3. Step 3: Cross multiply
    7,158,783x = 9,879,122.16 × 3,939,519
  4. Step 4: Simplify right side
    7,158,783x = 38,918,989,452,641.04
  5. Step 5: Solve for x
    x = 38,918,989,452,641.04/7,158,783
  6. Step 6: Final answer
    x = 5,436,537.11

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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.