Home / 515,066.45-710,771.96-285,633.14

Finding the Fourth Proportional to 515,066.45, 710,771.96 and 285,633.14

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Solution

The fourth proportional to 515,066.45, 710,771.96 and 285,633.14 is: 394,162.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,066.45 : 710,771.96 = 285,633.14 : x
  2. Step 2: Convert to fraction form
    515,066.45/710,771.96 = 285,633.14/x
  3. Step 3: Cross multiply
    515,066.45x = 710,771.96 × 285,633.14
  4. Step 4: Simplify right side
    515,066.45x = 203,020,023,918.98
  5. Step 5: Solve for x
    x = 203,020,023,918.98/515,066.45
  6. Step 6: Final answer
    x = 394,162.78

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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.