Home / 1,189,513.68-1,641,484.92-645,637.90

Finding the Fourth Proportional to 1,189,513.68, 1,641,484.92 and 645,637.90

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Solution

The fourth proportional to 1,189,513.68, 1,641,484.92 and 645,637.90 is: 890,956.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,513.68 : 1,641,484.92 = 645,637.90 : x
  2. Step 2: Convert to fraction form
    1,189,513.68/1,641,484.92 = 645,637.90/x
  3. Step 3: Cross multiply
    1,189,513.68x = 1,641,484.92 × 645,637.90
  4. Step 4: Simplify right side
    1,189,513.68x = 1,059,804,876,630.47
  5. Step 5: Solve for x
    x = 1,059,804,876,630.47/1,189,513.68
  6. Step 6: Final answer
    x = 890,956.44

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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.