Home / 780,009.13-1,170,013.69-189,033.13

Finding the Fourth Proportional to 780,009.13, 1,170,013.69 and 189,033.13

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Solution

The fourth proportional to 780,009.13, 1,170,013.69 and 189,033.13 is: 283,549.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,009.13 : 1,170,013.69 = 189,033.13 : x
  2. Step 2: Convert to fraction form
    780,009.13/1,170,013.69 = 189,033.13/x
  3. Step 3: Cross multiply
    780,009.13x = 1,170,013.69 × 189,033.13
  4. Step 4: Simplify right side
    780,009.13x = 221,171,349,963.55
  5. Step 5: Solve for x
    x = 221,171,349,963.55/780,009.13
  6. Step 6: Final answer
    x = 283,549.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.