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Finding the Fourth Proportional to 483,339.40, 724,317.90 and 355,985.80

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Solution

The fourth proportional to 483,339.40, 724,317.90 and 355,985.80 is: 533,469.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,339.40 : 724,317.90 = 355,985.80 : x
  2. Step 2: Convert to fraction form
    483,339.40/724,317.90 = 355,985.80/x
  3. Step 3: Cross multiply
    483,339.40x = 724,317.90 × 355,985.80
  4. Step 4: Simplify right side
    483,339.40x = 257,846,887,085.82
  5. Step 5: Solve for x
    x = 257,846,887,085.82/483,339.40
  6. Step 6: Final answer
    x = 533,469.62

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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.