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Finding the Fourth Proportional to 522,611.80, 782,751.30 and 403,898.20

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Solution

The fourth proportional to 522,611.80, 782,751.30 and 403,898.20 is: 604,945.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,611.80 : 782,751.30 = 403,898.20 : x
  2. Step 2: Convert to fraction form
    522,611.80/782,751.30 = 403,898.20/x
  3. Step 3: Cross multiply
    522,611.80x = 782,751.30 × 403,898.20
  4. Step 4: Simplify right side
    522,611.80x = 316,151,841,117.66
  5. Step 5: Solve for x
    x = 316,151,841,117.66/522,611.80
  6. Step 6: Final answer
    x = 604,945.85

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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.