Home / 1,189,809.40-1,641,949.78-645,951.10

Finding the Fourth Proportional to 1,189,809.40, 1,641,949.78 and 645,951.10

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Solution

The fourth proportional to 1,189,809.40, 1,641,949.78 and 645,951.10 is: 891,419.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,809.40 : 1,641,949.78 = 645,951.10 : x
  2. Step 2: Convert to fraction form
    1,189,809.40/1,641,949.78 = 645,951.10/x
  3. Step 3: Cross multiply
    1,189,809.40x = 1,641,949.78 × 645,951.10
  4. Step 4: Simplify right side
    1,189,809.40x = 1,060,619,266,535.76
  5. Step 5: Solve for x
    x = 1,060,619,266,535.76/1,189,809.40
  6. Step 6: Final answer
    x = 891,419.47

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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.