Home / 739,955.09-1,021,138.92-400,423.34

Finding the Fourth Proportional to 739,955.09, 1,021,138.92 and 400,423.34

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Solution

The fourth proportional to 739,955.09, 1,021,138.92 and 400,423.34 is: 552,584.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,955.09 : 1,021,138.92 = 400,423.34 : x
  2. Step 2: Convert to fraction form
    739,955.09/1,021,138.92 = 400,423.34/x
  3. Step 3: Cross multiply
    739,955.09x = 1,021,138.92 × 400,423.34
  4. Step 4: Simplify right side
    739,955.09x = 408,887,851,844.70
  5. Step 5: Solve for x
    x = 408,887,851,844.70/739,955.09
  6. Step 6: Final answer
    x = 552,584.69

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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.