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Finding the Fourth Proportional to 603,800.60, 904,664.10 and 319,069.40

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Solution

The fourth proportional to 603,800.60, 904,664.10 and 319,069.40 is: 478,056.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,800.60 : 904,664.10 = 319,069.40 : x
  2. Step 2: Convert to fraction form
    603,800.60/904,664.10 = 319,069.40/x
  3. Step 3: Cross multiply
    603,800.60x = 904,664.10 × 319,069.40
  4. Step 4: Simplify right side
    603,800.60x = 288,650,631,588.54
  5. Step 5: Solve for x
    x = 288,650,631,588.54/603,800.60
  6. Step 6: Final answer
    x = 478,056.22

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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.