Home / 739,972.64-1,021,164.81-400,440.80

Finding the Fourth Proportional to 739,972.64, 1,021,164.81 and 400,440.80

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Solution

The fourth proportional to 739,972.64, 1,021,164.81 and 400,440.80 is: 552,609.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,972.64 : 1,021,164.81 = 400,440.80 : x
  2. Step 2: Convert to fraction form
    739,972.64/1,021,164.81 = 400,440.80/x
  3. Step 3: Cross multiply
    739,972.64x = 1,021,164.81 × 400,440.80
  4. Step 4: Simplify right side
    739,972.64x = 408,916,053,448.25
  5. Step 5: Solve for x
    x = 408,916,053,448.25/739,972.64
  6. Step 6: Final answer
    x = 552,609.69

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1.5x scale

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.