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Finding the Fourth Proportional to 553,577.31, 763,993.13 and 338,859.27

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Solution

The fourth proportional to 553,577.31, 763,993.13 and 338,859.27 is: 467,660.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,577.31 : 763,993.13 = 338,859.27 : x
  2. Step 2: Convert to fraction form
    553,577.31/763,993.13 = 338,859.27/x
  3. Step 3: Cross multiply
    553,577.31x = 763,993.13 × 338,859.27
  4. Step 4: Simplify right side
    553,577.31x = 258,886,154,316.82
  5. Step 5: Solve for x
    x = 258,886,154,316.82/553,577.31
  6. Step 6: Final answer
    x = 467,660.34

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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.