Home / 1,189,475.72-1,641,439.86-645,585.80

Finding the Fourth Proportional to 1,189,475.72, 1,641,439.86 and 645,585.80

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Solution

The fourth proportional to 1,189,475.72, 1,641,439.86 and 645,585.80 is: 890,888.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,475.72 : 1,641,439.86 = 645,585.80 : x
  2. Step 2: Convert to fraction form
    1,189,475.72/1,641,439.86 = 645,585.80/x
  3. Step 3: Cross multiply
    1,189,475.72x = 1,641,439.86 × 645,585.80
  4. Step 4: Simplify right side
    1,189,475.72x = 1,059,690,265,169.99
  5. Step 5: Solve for x
    x = 1,059,690,265,169.99/1,189,475.72
  6. Step 6: Final answer
    x = 890,888.52

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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.