Home / 1,189,421.39-1,641,359.77-645,546.23

Finding the Fourth Proportional to 1,189,421.39, 1,641,359.77 and 645,546.23

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Solution

The fourth proportional to 1,189,421.39, 1,641,359.77 and 645,546.23 is: 890,831.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,421.39 : 1,641,359.77 = 645,546.23 : x
  2. Step 2: Convert to fraction form
    1,189,421.39/1,641,359.77 = 645,546.23/x
  3. Step 3: Cross multiply
    1,189,421.39x = 1,641,359.77 × 645,546.23
  4. Step 4: Simplify right side
    1,189,421.39x = 1,059,573,611,597.17
  5. Step 5: Solve for x
    x = 1,059,573,611,597.17/1,189,421.39
  6. Step 6: Final answer
    x = 890,831.14

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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.