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Finding the Fourth Proportional to 777,291.62, 1,072,657.77 and 437,869.22

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Solution

The fourth proportional to 777,291.62, 1,072,657.77 and 437,869.22 is: 604,256.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,291.62 : 1,072,657.77 = 437,869.22 : x
  2. Step 2: Convert to fraction form
    777,291.62/1,072,657.77 = 437,869.22/x
  3. Step 3: Cross multiply
    777,291.62x = 1,072,657.77 × 437,869.22
  4. Step 4: Simplify right side
    777,291.62x = 469,683,821,076.84
  5. Step 5: Solve for x
    x = 469,683,821,076.84/777,291.62
  6. Step 6: Final answer
    x = 604,256.90

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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.