Home / 1,189,228.16-1,641,135.90-645,363.93

Finding the Fourth Proportional to 1,189,228.16, 1,641,135.90 and 645,363.93

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Solution

The fourth proportional to 1,189,228.16, 1,641,135.90 and 645,363.93 is: 890,602.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,228.16 : 1,641,135.90 = 645,363.93 : x
  2. Step 2: Convert to fraction form
    1,189,228.16/1,641,135.90 = 645,363.93/x
  3. Step 3: Cross multiply
    1,189,228.16x = 1,641,135.90 × 645,363.93
  4. Step 4: Simplify right side
    1,189,228.16x = 1,059,129,922,662.46
  5. Step 5: Solve for x
    x = 1,059,129,922,662.46/1,189,228.16
  6. Step 6: Final answer
    x = 890,602.79

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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.