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Finding the Fourth Proportional to 479,677.23, 661,944.06 and 261,878.46

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Solution

The fourth proportional to 479,677.23, 661,944.06 and 261,878.46 is: 361,386.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,677.23 : 661,944.06 = 261,878.46 : x
  2. Step 2: Convert to fraction form
    479,677.23/661,944.06 = 261,878.46/x
  3. Step 3: Cross multiply
    479,677.23x = 661,944.06 × 261,878.46
  4. Step 4: Simplify right side
    479,677.23x = 173,348,891,038.95
  5. Step 5: Solve for x
    x = 173,348,891,038.95/479,677.23
  6. Step 6: Final answer
    x = 361,386.53

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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.