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Finding the Fourth Proportional to 800,672, 1,104,941.40 and 438,127.62

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Solution

The fourth proportional to 800,672, 1,104,941.40 and 438,127.62 is: 604,623.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,672 : 1,104,941.40 = 438,127.62 : x
  2. Step 2: Convert to fraction form
    800,672/1,104,941.40 = 438,127.62/x
  3. Step 3: Cross multiply
    800,672x = 1,104,941.40 × 438,127.62
  4. Step 4: Simplify right side
    800,672x = 484,105,345,821.47
  5. Step 5: Solve for x
    x = 484,105,345,821.47/800,672
  6. Step 6: Final answer
    x = 604,623.80

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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.