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Finding the Fourth Proportional to 551,679.36, 761,657.17 and 437,419.55

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Solution

The fourth proportional to 551,679.36, 761,657.17 and 437,419.55 is: 603,908.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,679.36 : 761,657.17 = 437,419.55 : x
  2. Step 2: Convert to fraction form
    551,679.36/761,657.17 = 437,419.55/x
  3. Step 3: Cross multiply
    551,679.36x = 761,657.17 × 437,419.55
  4. Step 4: Simplify right side
    551,679.36x = 333,163,732,747.39
  5. Step 5: Solve for x
    x = 333,163,732,747.39/551,679.36
  6. Step 6: Final answer
    x = 603,908.28

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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.