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Finding the Fourth Proportional to 656,317.02, 905,717.52 and 354,511.02

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Solution

The fourth proportional to 656,317.02, 905,717.52 and 354,511.02 is: 489,225.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,317.02 : 905,717.52 = 354,511.02 : x
  2. Step 2: Convert to fraction form
    656,317.02/905,717.52 = 354,511.02/x
  3. Step 3: Cross multiply
    656,317.02x = 905,717.52 × 354,511.02
  4. Step 4: Simplify right side
    656,317.02x = 321,086,841,847.07
  5. Step 5: Solve for x
    x = 321,086,841,847.07/656,317.02
  6. Step 6: Final answer
    x = 489,225.23

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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.