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Finding the Fourth Proportional to 804,548.90, 1,207,600.95 and 405,640.10

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Solution

The fourth proportional to 804,548.90, 1,207,600.95 and 405,640.10 is: 608,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,548.90 : 1,207,600.95 = 405,640.10 : x
  2. Step 2: Convert to fraction form
    804,548.90/1,207,600.95 = 405,640.10/x
  3. Step 3: Cross multiply
    804,548.90x = 1,207,600.95 × 405,640.10
  4. Step 4: Simplify right side
    804,548.90x = 489,851,370,118.10
  5. Step 5: Solve for x
    x = 489,851,370,118.10/804,548.90
  6. Step 6: Final answer
    x = 608,852.20

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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.