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Finding the Fourth Proportional to 515,425.84, 711,326.62 and 286,026.56

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Solution

The fourth proportional to 515,425.84, 711,326.62 and 286,026.56 is: 394,738.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,425.84 : 711,326.62 = 286,026.56 : x
  2. Step 2: Convert to fraction form
    515,425.84/711,326.62 = 286,026.56/x
  3. Step 3: Cross multiply
    515,425.84x = 711,326.62 × 286,026.56
  4. Step 4: Simplify right side
    515,425.84x = 203,458,306,155.03
  5. Step 5: Solve for x
    x = 203,458,306,155.03/515,425.84
  6. Step 6: Final answer
    x = 394,738.27

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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.