Home / 738,961,763.41-1,019,769,935.11-399,870,240.61

Finding the Fourth Proportional to 738,961,763.41, 1,019,769,935.11 and 399,870,240.61

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Solution

The fourth proportional to 738,961,763.41, 1,019,769,935.11 and 399,870,240.61 is: 551,822,393.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,961,763.41 : 1,019,769,935.11 = 399,870,240.61 : x
  2. Step 2: Convert to fraction form
    738,961,763.41/1,019,769,935.11 = 399,870,240.61/x
  3. Step 3: Cross multiply
    738,961,763.41x = 1,019,769,935.11 × 399,870,240.61
  4. Step 4: Simplify right side
    738,961,763.41x = 407,775,649,321,622,848
  5. Step 5: Solve for x
    x = 407,775,649,321,622,848/738,961,763.41
  6. Step 6: Final answer
    x = 551,822,393.95

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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.