Home / 739,970.39-1,021,161.71-400,438.55

Finding the Fourth Proportional to 739,970.39, 1,021,161.71 and 400,438.55

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Solution

The fourth proportional to 739,970.39, 1,021,161.71 and 400,438.55 is: 552,606.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,970.39 : 1,021,161.71 = 400,438.55 : x
  2. Step 2: Convert to fraction form
    739,970.39/1,021,161.71 = 400,438.55/x
  3. Step 3: Cross multiply
    739,970.39x = 1,021,161.71 × 400,438.55
  4. Step 4: Simplify right side
    739,970.39x = 408,912,512,465.73
  5. Step 5: Solve for x
    x = 408,912,512,465.73/739,970.39
  6. Step 6: Final answer
    x = 552,606.59

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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.