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Finding the Fourth Proportional to 808,976, 1,116,386.88 and 451,280

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Solution

The fourth proportional to 808,976, 1,116,386.88 and 451,280 is: 622,766.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,976 : 1,116,386.88 = 451,280 : x
  2. Step 2: Convert to fraction form
    808,976/1,116,386.88 = 451,280/x
  3. Step 3: Cross multiply
    808,976x = 1,116,386.88 × 451,280
  4. Step 4: Simplify right side
    808,976x = 503,803,071,206.40
  5. Step 5: Solve for x
    x = 503,803,071,206.40/808,976
  6. Step 6: Final answer
    x = 622,766.40

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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.