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Finding the Fourth Proportional to 492,791.40, 680,053.10 and 266,436.90

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Solution

The fourth proportional to 492,791.40, 680,053.10 and 266,436.90 is: 367,683.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,791.40 : 680,053.10 = 266,436.90 : x
  2. Step 2: Convert to fraction form
    492,791.40/680,053.10 = 266,436.90/x
  3. Step 3: Cross multiply
    492,791.40x = 680,053.10 × 266,436.90
  4. Step 4: Simplify right side
    492,791.40x = 181,191,239,799.39
  5. Step 5: Solve for x
    x = 181,191,239,799.39/492,791.40
  6. Step 6: Final answer
    x = 367,683.45

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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.