Home / 776,684.67-1,071,272.71-518,431.40

Finding the Fourth Proportional to 776,684.67, 1,071,272.71 and 518,431.40

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Solution

The fourth proportional to 776,684.67, 1,071,272.71 and 518,431.40 is: 715,066.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,684.67 : 1,071,272.71 = 518,431.40 : x
  2. Step 2: Convert to fraction form
    776,684.67/1,071,272.71 = 518,431.40/x
  3. Step 3: Cross multiply
    776,684.67x = 1,071,272.71 × 518,431.40
  4. Step 4: Simplify right side
    776,684.67x = 555,381,410,827.09
  5. Step 5: Solve for x
    x = 555,381,410,827.09/776,684.67
  6. Step 6: Final answer
    x = 715,066.79

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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.