Home / 776,679.78-1,071,265.98-518,426.52

Finding the Fourth Proportional to 776,679.78, 1,071,265.98 and 518,426.52

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Solution

The fourth proportional to 776,679.78, 1,071,265.98 and 518,426.52 is: 715,060.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,679.78 : 1,071,265.98 = 518,426.52 : x
  2. Step 2: Convert to fraction form
    776,679.78/1,071,265.98 = 518,426.52/x
  3. Step 3: Cross multiply
    776,679.78x = 1,071,265.98 × 518,426.52
  4. Step 4: Simplify right side
    776,679.78x = 555,372,694,005.79
  5. Step 5: Solve for x
    x = 555,372,694,005.79/776,679.78
  6. Step 6: Final answer
    x = 715,060.07

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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.