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Finding the Fourth Proportional to 488,897.11, 734,468.46 and 345,133.45

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Solution

The fourth proportional to 488,897.11, 734,468.46 and 345,133.45 is: 518,492.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,897.11 : 734,468.46 = 345,133.45 : x
  2. Step 2: Convert to fraction form
    488,897.11/734,468.46 = 345,133.45/x
  3. Step 3: Cross multiply
    488,897.11x = 734,468.46 × 345,133.45
  4. Step 4: Simplify right side
    488,897.11x = 253,489,633,515.99
  5. Step 5: Solve for x
    x = 253,489,633,515.99/488,897.11
  6. Step 6: Final answer
    x = 518,492.80

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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.