Home / 1,189,619.81-1,641,631.48-645,743.67

Finding the Fourth Proportional to 1,189,619.81, 1,641,631.48 and 645,743.67

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Solution

The fourth proportional to 1,189,619.81, 1,641,631.48 and 645,743.67 is: 891,102.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,619.81 : 1,641,631.48 = 645,743.67 : x
  2. Step 2: Convert to fraction form
    1,189,619.81/1,641,631.48 = 645,743.67/x
  3. Step 3: Cross multiply
    1,189,619.81x = 1,641,631.48 × 645,743.67
  4. Step 4: Simplify right side
    1,189,619.81x = 1,060,073,136,682.73
  5. Step 5: Solve for x
    x = 1,060,073,136,682.73/1,189,619.81
  6. Step 6: Final answer
    x = 891,102.46

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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.