Home / 1,189,479.75-1,641,438.08-645,603.85

Finding the Fourth Proportional to 1,189,479.75, 1,641,438.08 and 645,603.85

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Solution

The fourth proportional to 1,189,479.75, 1,641,438.08 and 645,603.85 is: 890,909.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,479.75 : 1,641,438.08 = 645,603.85 : x
  2. Step 2: Convert to fraction form
    1,189,479.75/1,641,438.08 = 645,603.85/x
  3. Step 3: Cross multiply
    1,189,479.75x = 1,641,438.08 × 645,603.85
  4. Step 4: Simplify right side
    1,189,479.75x = 1,059,718,743,984.61
  5. Step 5: Solve for x
    x = 1,059,718,743,984.61/1,189,479.75
  6. Step 6: Final answer
    x = 890,909.45

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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.