Home / 739,400.67-1,020,376.00-399,868.92

Finding the Fourth Proportional to 739,400.67, 1,020,376.00 and 399,868.92

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Solution

The fourth proportional to 739,400.67, 1,020,376.00 and 399,868.92 is: 551,820.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,400.67 : 1,020,376.00 = 399,868.92 : x
  2. Step 2: Convert to fraction form
    739,400.67/1,020,376.00 = 399,868.92/x
  3. Step 3: Cross multiply
    739,400.67x = 1,020,376.00 × 399,868.92
  4. Step 4: Simplify right side
    739,400.67x = 408,016,654,439.84
  5. Step 5: Solve for x
    x = 408,016,654,439.84/739,400.67
  6. Step 6: Final answer
    x = 551,820.78

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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.