Home / 1,189,519.93-1,641,539.12-645,655.83

Finding the Fourth Proportional to 1,189,519.93, 1,641,539.12 and 645,655.83

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Solution

The fourth proportional to 1,189,519.93, 1,641,539.12 and 645,655.83 is: 891,005.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,519.93 : 1,641,539.12 = 645,655.83 : x
  2. Step 2: Convert to fraction form
    1,189,519.93/1,641,539.12 = 645,655.83/x
  3. Step 3: Cross multiply
    1,189,519.93x = 1,641,539.12 × 645,655.83
  4. Step 4: Simplify right side
    1,189,519.93x = 1,059,869,303,001.07
  5. Step 5: Solve for x
    x = 1,059,869,303,001.07/1,189,519.93
  6. Step 6: Final answer
    x = 891,005.92

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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.