Home / 776,684.74-1,071,272.83-518,431.48

Finding the Fourth Proportional to 776,684.74, 1,071,272.83 and 518,431.48

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Solution

The fourth proportional to 776,684.74, 1,071,272.83 and 518,431.48 is: 715,066.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,684.74 : 1,071,272.83 = 518,431.48 : x
  2. Step 2: Convert to fraction form
    776,684.74/1,071,272.83 = 518,431.48/x
  3. Step 3: Cross multiply
    776,684.74x = 1,071,272.83 × 518,431.48
  4. Step 4: Simplify right side
    776,684.74x = 555,381,558,740.69
  5. Step 5: Solve for x
    x = 555,381,558,740.69/776,684.74
  6. Step 6: Final answer
    x = 715,066.91

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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.