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Finding the Fourth Proportional to 487,486.45, 672,900.40 and 335,029.32

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Solution

The fourth proportional to 487,486.45, 672,900.40 and 335,029.32 is: 462,456.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,486.45 : 672,900.40 = 335,029.32 : x
  2. Step 2: Convert to fraction form
    487,486.45/672,900.40 = 335,029.32/x
  3. Step 3: Cross multiply
    487,486.45x = 672,900.40 × 335,029.32
  4. Step 4: Simplify right side
    487,486.45x = 225,441,358,400.08
  5. Step 5: Solve for x
    x = 225,441,358,400.08/487,486.45
  6. Step 6: Final answer
    x = 462,456.67

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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.