Home / 739,970.64-1,021,162.05-400,438.80

Finding the Fourth Proportional to 739,970.64, 1,021,162.05 and 400,438.80

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Solution

The fourth proportional to 739,970.64, 1,021,162.05 and 400,438.80 is: 552,606.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,970.64 : 1,021,162.05 = 400,438.80 : x
  2. Step 2: Convert to fraction form
    739,970.64/1,021,162.05 = 400,438.80/x
  3. Step 3: Cross multiply
    739,970.64x = 1,021,162.05 × 400,438.80
  4. Step 4: Simplify right side
    739,970.64x = 408,912,905,907.54
  5. Step 5: Solve for x
    x = 408,912,905,907.54/739,970.64
  6. Step 6: Final answer
    x = 552,606.93

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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.