Home / 739,436.18-1,020,422.61-399,904.43

Finding the Fourth Proportional to 739,436.18, 1,020,422.61 and 399,904.43

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Solution

The fourth proportional to 739,436.18, 1,020,422.61 and 399,904.43 is: 551,868.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,436.18 : 1,020,422.61 = 399,904.43 : x
  2. Step 2: Convert to fraction form
    739,436.18/1,020,422.61 = 399,904.43/x
  3. Step 3: Cross multiply
    739,436.18x = 1,020,422.61 × 399,904.43
  4. Step 4: Simplify right side
    739,436.18x = 408,071,524,762.22
  5. Step 5: Solve for x
    x = 408,071,524,762.22/739,436.18
  6. Step 6: Final answer
    x = 551,868.48

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Double scale
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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.