Home / 776,678.54-1,071,264.26-518,425.28

Finding the Fourth Proportional to 776,678.54, 1,071,264.26 and 518,425.28

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Solution

The fourth proportional to 776,678.54, 1,071,264.26 and 518,425.28 is: 715,058.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,678.54 : 1,071,264.26 = 518,425.28 : x
  2. Step 2: Convert to fraction form
    776,678.54/1,071,264.26 = 518,425.28/x
  3. Step 3: Cross multiply
    776,678.54x = 1,071,264.26 × 518,425.28
  4. Step 4: Simplify right side
    776,678.54x = 555,370,465,996.05
  5. Step 5: Solve for x
    x = 555,370,465,996.05/776,678.54
  6. Step 6: Final answer
    x = 715,058.34

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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.