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Finding the Fourth Proportional to 479,303.12, 664,234.41 and 472,538

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Solution

The fourth proportional to 479,303.12, 664,234.41 and 472,538 is: 654,859.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,303.12 : 664,234.41 = 472,538 : x
  2. Step 2: Convert to fraction form
    479,303.12/664,234.41 = 472,538/x
  3. Step 3: Cross multiply
    479,303.12x = 664,234.41 × 472,538
  4. Step 4: Simplify right side
    479,303.12x = 313,875,999,632.58
  5. Step 5: Solve for x
    x = 313,875,999,632.58/479,303.12
  6. Step 6: Final answer
    x = 654,859.08

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.