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Finding the Fourth Proportional to 603,421.38, 903,754.26 and 288,099.72

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Solution

The fourth proportional to 603,421.38, 903,754.26 and 288,099.72 is: 431,491.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,421.38 : 903,754.26 = 288,099.72 : x
  2. Step 2: Convert to fraction form
    603,421.38/903,754.26 = 288,099.72/x
  3. Step 3: Cross multiply
    603,421.38x = 903,754.26 × 288,099.72
  4. Step 4: Simplify right side
    603,421.38x = 260,371,349,254.81
  5. Step 5: Solve for x
    x = 260,371,349,254.81/603,421.38
  6. Step 6: Final answer
    x = 431,491.75

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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.