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Finding the Fourth Proportional to 948,384.72, 1,422,603 and 317,275.92

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Solution

The fourth proportional to 948,384.72, 1,422,603 and 317,275.92 is: 475,922.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    948,384.72 : 1,422,603 = 317,275.92 : x
  2. Step 2: Convert to fraction form
    948,384.72/1,422,603 = 317,275.92/x
  3. Step 3: Cross multiply
    948,384.72x = 1,422,603 × 317,275.92
  4. Step 4: Simplify right side
    948,384.72x = 451,357,675,619.76
  5. Step 5: Solve for x
    x = 451,357,675,619.76/948,384.72
  6. Step 6: Final answer
    x = 475,922.55

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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.