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Finding the Fourth Proportional to 527,009.25, 790,512.39 and 407,240.49

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Solution

The fourth proportional to 527,009.25, 790,512.39 and 407,240.49 is: 610,859.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,009.25 : 790,512.39 = 407,240.49 : x
  2. Step 2: Convert to fraction form
    527,009.25/790,512.39 = 407,240.49/x
  3. Step 3: Cross multiply
    527,009.25x = 790,512.39 × 407,240.49
  4. Step 4: Simplify right side
    527,009.25x = 321,928,653,054.67
  5. Step 5: Solve for x
    x = 321,928,653,054.67/527,009.25
  6. Step 6: Final answer
    x = 610,859.59

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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.