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Finding the Fourth Proportional to 503,316.74, 694,605.84 and 288,492.60

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Solution

The fourth proportional to 503,316.74, 694,605.84 and 288,492.60 is: 398,136.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,316.74 : 694,605.84 = 288,492.60 : x
  2. Step 2: Convert to fraction form
    503,316.74/694,605.84 = 288,492.60/x
  3. Step 3: Cross multiply
    503,316.74x = 694,605.84 × 288,492.60
  4. Step 4: Simplify right side
    503,316.74x = 200,388,644,756.78
  5. Step 5: Solve for x
    x = 200,388,644,756.78/503,316.74
  6. Step 6: Final answer
    x = 398,136.26

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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.