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Finding the Fourth Proportional to 524,870.39, 724,071.67 and 309,866.42

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Solution

The fourth proportional to 524,870.39, 724,071.67 and 309,866.42 is: 427,468.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,870.39 : 724,071.67 = 309,866.42 : x
  2. Step 2: Convert to fraction form
    524,870.39/724,071.67 = 309,866.42/x
  3. Step 3: Cross multiply
    524,870.39x = 724,071.67 × 309,866.42
  4. Step 4: Simplify right side
    524,870.39x = 224,365,491,811.30
  5. Step 5: Solve for x
    x = 224,365,491,811.30/524,870.39
  6. Step 6: Final answer
    x = 427,468.38

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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.