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Finding the Fourth Proportional to 551,679.02, 761,656.70 and 437,419.20

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Solution

The fourth proportional to 551,679.02, 761,656.70 and 437,419.20 is: 603,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,679.02 : 761,656.70 = 437,419.20 : x
  2. Step 2: Convert to fraction form
    551,679.02/761,656.70 = 437,419.20/x
  3. Step 3: Cross multiply
    551,679.02x = 761,656.70 × 437,419.20
  4. Step 4: Simplify right side
    551,679.02x = 333,163,262,611.63
  5. Step 5: Solve for x
    x = 333,163,262,611.63/551,679.02
  6. Step 6: Final answer
    x = 603,907.80

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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.