Home / 1,189,499.70-1,641,465.58-645,623.92

Finding the Fourth Proportional to 1,189,499.70, 1,641,465.58 and 645,623.92

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Solution

The fourth proportional to 1,189,499.70, 1,641,465.58 and 645,623.92 is: 890,937.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,499.70 : 1,641,465.58 = 645,623.92 : x
  2. Step 2: Convert to fraction form
    1,189,499.70/1,641,465.58 = 645,623.92/x
  3. Step 3: Cross multiply
    1,189,499.70x = 1,641,465.58 × 645,623.92
  4. Step 4: Simplify right side
    1,189,499.70x = 1,059,769,442,304.67
  5. Step 5: Solve for x
    x = 1,059,769,442,304.67/1,189,499.70
  6. Step 6: Final answer
    x = 890,937.12

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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.