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Finding the Fourth Proportional to 638,798.31, 958,862.07 and 470,508.66

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Solution

The fourth proportional to 638,798.31, 958,862.07 and 470,508.66 is: 706,252.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,798.31 : 958,862.07 = 470,508.66 : x
  2. Step 2: Convert to fraction form
    638,798.31/958,862.07 = 470,508.66/x
  3. Step 3: Cross multiply
    638,798.31x = 958,862.07 × 470,508.66
  4. Step 4: Simplify right side
    638,798.31x = 451,152,907,680.53
  5. Step 5: Solve for x
    x = 451,152,907,680.53/638,798.31
  6. Step 6: Final answer
    x = 706,252.51

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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.