Home / 1,189,785.60-1,641,932.69-645,944.31

Finding the Fourth Proportional to 1,189,785.60, 1,641,932.69 and 645,944.31

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Solution

The fourth proportional to 1,189,785.60, 1,641,932.69 and 645,944.31 is: 891,418.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,785.60 : 1,641,932.69 = 645,944.31 : x
  2. Step 2: Convert to fraction form
    1,189,785.60/1,641,932.69 = 645,944.31/x
  3. Step 3: Cross multiply
    1,189,785.60x = 1,641,932.69 × 645,944.31
  4. Step 4: Simplify right side
    1,189,785.60x = 1,060,597,075,278.77
  5. Step 5: Solve for x
    x = 1,060,597,075,278.77/1,189,785.60
  6. Step 6: Final answer
    x = 891,418.65

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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.