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Finding the Fourth Proportional to 555,071.90, 766,017.79 and 340,170.46

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Solution

The fourth proportional to 555,071.90, 766,017.79 and 340,170.46 is: 469,446.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,071.90 : 766,017.79 = 340,170.46 : x
  2. Step 2: Convert to fraction form
    555,071.90/766,017.79 = 340,170.46/x
  3. Step 3: Cross multiply
    555,071.90x = 766,017.79 × 340,170.46
  4. Step 4: Simplify right side
    555,071.90x = 260,576,620,162.39
  5. Step 5: Solve for x
    x = 260,576,620,162.39/555,071.90
  6. Step 6: Final answer
    x = 469,446.61

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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.