Home / 1,189,242.93-1,641,159.54-645,378.60

Finding the Fourth Proportional to 1,189,242.93, 1,641,159.54 and 645,378.60

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Solution

The fourth proportional to 1,189,242.93, 1,641,159.54 and 645,378.60 is: 890,624.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,242.93 : 1,641,159.54 = 645,378.60 : x
  2. Step 2: Convert to fraction form
    1,189,242.93/1,641,159.54 = 645,378.60/x
  3. Step 3: Cross multiply
    1,189,242.93x = 1,641,159.54 × 645,378.60
  4. Step 4: Simplify right side
    1,189,242.93x = 1,059,169,246,301.84
  5. Step 5: Solve for x
    x = 1,059,169,246,301.84/1,189,242.93
  6. Step 6: Final answer
    x = 890,624.80

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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.