Home / 1,203,979.68-1,661,510.64-660,165.12

Finding the Fourth Proportional to 1,203,979.68, 1,661,510.64 and 660,165.12

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Solution

The fourth proportional to 1,203,979.68, 1,661,510.64 and 660,165.12 is: 911,038.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,979.68 : 1,661,510.64 = 660,165.12 : x
  2. Step 2: Convert to fraction form
    1,203,979.68/1,661,510.64 = 660,165.12/x
  3. Step 3: Cross multiply
    1,203,979.68x = 1,661,510.64 × 660,165.12
  4. Step 4: Simplify right side
    1,203,979.68x = 1,096,871,371,036.88
  5. Step 5: Solve for x
    x = 1,096,871,371,036.88/1,203,979.68
  6. Step 6: Final answer
    x = 911,038.11

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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.