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Finding the Fourth Proportional to 603,905.10, 904,764.15 and 478,371.30

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Solution

The fourth proportional to 603,905.10, 904,764.15 and 478,371.30 is: 716,690.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,905.10 : 904,764.15 = 478,371.30 : x
  2. Step 2: Convert to fraction form
    603,905.10/904,764.15 = 478,371.30/x
  3. Step 3: Cross multiply
    603,905.10x = 904,764.15 × 478,371.30
  4. Step 4: Simplify right side
    603,905.10x = 432,813,202,628.90
  5. Step 5: Solve for x
    x = 432,813,202,628.90/603,905.10
  6. Step 6: Final answer
    x = 716,690.76

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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.