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Finding the Fourth Proportional to 802,906.25, 1,108,010.63 and 445,210.25

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Solution

The fourth proportional to 802,906.25, 1,108,010.63 and 445,210.25 is: 614,390.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,906.25 : 1,108,010.63 = 445,210.25 : x
  2. Step 2: Convert to fraction form
    802,906.25/1,108,010.63 = 445,210.25/x
  3. Step 3: Cross multiply
    802,906.25x = 1,108,010.63 × 445,210.25
  4. Step 4: Simplify right side
    802,906.25x = 493,297,687,358.91
  5. Step 5: Solve for x
    x = 493,297,687,358.91/802,906.25
  6. Step 6: Final answer
    x = 614,390.15

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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.