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Finding the Fourth Proportional to 486,790.60, 730,460.82 and 262,146.28

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Solution

The fourth proportional to 486,790.60, 730,460.82 and 262,146.28 is: 393,367.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,790.60 : 730,460.82 = 262,146.28 : x
  2. Step 2: Convert to fraction form
    486,790.60/730,460.82 = 262,146.28/x
  3. Step 3: Cross multiply
    486,790.60x = 730,460.82 × 262,146.28
  4. Step 4: Simplify right side
    486,790.60x = 191,487,586,648.75
  5. Step 5: Solve for x
    x = 191,487,586,648.75/486,790.60
  6. Step 6: Final answer
    x = 393,367.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.