Home / 739,035.50-1,019,870.51-399,503.75

Finding the Fourth Proportional to 739,035.50, 1,019,870.51 and 399,503.75

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Solution

The fourth proportional to 739,035.50, 1,019,870.51 and 399,503.75 is: 551,315.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,035.50 : 1,019,870.51 = 399,503.75 : x
  2. Step 2: Convert to fraction form
    739,035.50/1,019,870.51 = 399,503.75/x
  3. Step 3: Cross multiply
    739,035.50x = 1,019,870.51 × 399,503.75
  4. Step 4: Simplify right side
    739,035.50x = 407,442,086,162.54
  5. Step 5: Solve for x
    x = 407,442,086,162.54/739,035.50
  6. Step 6: Final answer
    x = 551,315.99

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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.