Home / 1,189,487.61-1,641,448.89-645,611.67

Finding the Fourth Proportional to 1,189,487.61, 1,641,448.89 and 645,611.67

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Solution

The fourth proportional to 1,189,487.61, 1,641,448.89 and 645,611.67 is: 890,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,487.61 : 1,641,448.89 = 645,611.67 : x
  2. Step 2: Convert to fraction form
    1,189,487.61/1,641,448.89 = 645,611.67/x
  3. Step 3: Cross multiply
    1,189,487.61x = 1,641,448.89 × 645,611.67
  4. Step 4: Simplify right side
    1,189,487.61x = 1,059,738,559,092.55
  5. Step 5: Solve for x
    x = 1,059,738,559,092.55/1,189,487.61
  6. Step 6: Final answer
    x = 890,920.22

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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.