Home / 1,189,501.65-1,641,513.92-645,637.55

Finding the Fourth Proportional to 1,189,501.65, 1,641,513.92 and 645,637.55

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Solution

The fourth proportional to 1,189,501.65, 1,641,513.92 and 645,637.55 is: 890,980.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,501.65 : 1,641,513.92 = 645,637.55 : x
  2. Step 2: Convert to fraction form
    1,189,501.65/1,641,513.92 = 645,637.55/x
  3. Step 3: Cross multiply
    1,189,501.65x = 1,641,513.92 × 645,637.55
  4. Step 4: Simplify right side
    1,189,501.65x = 1,059,823,014,163.94
  5. Step 5: Solve for x
    x = 1,059,823,014,163.94/1,189,501.65
  6. Step 6: Final answer
    x = 890,980.70

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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.