Home / 739,970.88-1,021,160.64-400,439.16

Finding the Fourth Proportional to 739,970.88, 1,021,160.64 and 400,439.16

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Solution

The fourth proportional to 739,970.88, 1,021,160.64 and 400,439.16 is: 552,606.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,970.88 : 1,021,160.64 = 400,439.16 : x
  2. Step 2: Convert to fraction form
    739,970.88/1,021,160.64 = 400,439.16/x
  3. Step 3: Cross multiply
    739,970.88x = 1,021,160.64 × 400,439.16
  4. Step 4: Simplify right side
    739,970.88x = 408,912,708,906.66
  5. Step 5: Solve for x
    x = 408,912,708,906.66/739,970.88
  6. Step 6: Final answer
    x = 552,606.49

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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.