Home / 1,189,605.52-1,641,611.10-645,729.60

Finding the Fourth Proportional to 1,189,605.52, 1,641,611.10 and 645,729.60

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Solution

The fourth proportional to 1,189,605.52, 1,641,611.10 and 645,729.60 is: 891,082.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,605.52 : 1,641,611.10 = 645,729.60 : x
  2. Step 2: Convert to fraction form
    1,189,605.52/1,641,611.10 = 645,729.60/x
  3. Step 3: Cross multiply
    1,189,605.52x = 1,641,611.10 × 645,729.60
  4. Step 4: Simplify right side
    1,189,605.52x = 1,060,036,878,958.56
  5. Step 5: Solve for x
    x = 1,060,036,878,958.56/1,189,605.52
  6. Step 6: Final answer
    x = 891,082.68

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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.