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Finding the Fourth Proportional to 555,072.39, 766,018.48 and 340,170.96

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Solution

The fourth proportional to 555,072.39, 766,018.48 and 340,170.96 is: 469,447.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,072.39 : 766,018.48 = 340,170.96 : x
  2. Step 2: Convert to fraction form
    555,072.39/766,018.48 = 340,170.96/x
  3. Step 3: Cross multiply
    555,072.39x = 766,018.48 × 340,170.96
  4. Step 4: Simplify right side
    555,072.39x = 260,577,241,719.34
  5. Step 5: Solve for x
    x = 260,577,241,719.34/555,072.39
  6. Step 6: Final answer
    x = 469,447.31

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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.