Home / 1,189,789.64-1,641,928.79-645,925.00

Finding the Fourth Proportional to 1,189,789.64, 1,641,928.79 and 645,925.00

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Solution

The fourth proportional to 1,189,789.64, 1,641,928.79 and 645,925.00 is: 891,386.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,789.64 : 1,641,928.79 = 645,925.00 : x
  2. Step 2: Convert to fraction form
    1,189,789.64/1,641,928.79 = 645,925.00/x
  3. Step 3: Cross multiply
    1,189,789.64x = 1,641,928.79 × 645,925.00
  4. Step 4: Simplify right side
    1,189,789.64x = 1,060,562,850,636.03
  5. Step 5: Solve for x
    x = 1,060,562,850,636.03/1,189,789.64
  6. Step 6: Final answer
    x = 891,386.86

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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.