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Finding the Fourth Proportional to 487,351.74, 672,339.46 and 326,258.69

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Solution

The fourth proportional to 487,351.74, 672,339.46 and 326,258.69 is: 450,099.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,351.74 : 672,339.46 = 326,258.69 : x
  2. Step 2: Convert to fraction form
    487,351.74/672,339.46 = 326,258.69/x
  3. Step 3: Cross multiply
    487,351.74x = 672,339.46 × 326,258.69
  4. Step 4: Simplify right side
    487,351.74x = 219,356,586,461.92
  5. Step 5: Solve for x
    x = 219,356,586,461.92/487,351.74
  6. Step 6: Final answer
    x = 450,099.12

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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.