Home / 1,289,982.15-1,780,176.50-709,215.16

Finding the Fourth Proportional to 1,289,982.15, 1,780,176.50 and 709,215.16

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Solution

The fourth proportional to 1,289,982.15, 1,780,176.50 and 709,215.16 is: 978,717.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,982.15 : 1,780,176.50 = 709,215.16 : x
  2. Step 2: Convert to fraction form
    1,289,982.15/1,780,176.50 = 709,215.16/x
  3. Step 3: Cross multiply
    1,289,982.15x = 1,780,176.50 × 709,215.16
  4. Step 4: Simplify right side
    1,289,982.15x = 1,262,528,160,640.31
  5. Step 5: Solve for x
    x = 1,262,528,160,640.31/1,289,982.15
  6. Step 6: Final answer
    x = 978,717.54

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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.