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Finding the Fourth Proportional to 487,710.64, 673,146.03 and 296,785.54

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Solution

The fourth proportional to 487,710.64, 673,146.03 and 296,785.54 is: 409,628.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,710.64 : 673,146.03 = 296,785.54 : x
  2. Step 2: Convert to fraction form
    487,710.64/673,146.03 = 296,785.54/x
  3. Step 3: Cross multiply
    487,710.64x = 673,146.03 × 296,785.54
  4. Step 4: Simplify right side
    487,710.64x = 199,780,008,012.41
  5. Step 5: Solve for x
    x = 199,780,008,012.41/487,710.64
  6. Step 6: Final answer
    x = 409,628.15

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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.