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Finding the Fourth Proportional to 603,972.60, 904,865.40 and 478,438.80

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Solution

The fourth proportional to 603,972.60, 904,865.40 and 478,438.80 is: 716,791.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,972.60 : 904,865.40 = 478,438.80 : x
  2. Step 2: Convert to fraction form
    603,972.60/904,865.40 = 478,438.80/x
  3. Step 3: Cross multiply
    603,972.60x = 904,865.40 × 478,438.80
  4. Step 4: Simplify right side
    603,972.60x = 432,922,716,137.52
  5. Step 5: Solve for x
    x = 432,922,716,137.52/603,972.60
  6. Step 6: Final answer
    x = 716,791.98

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1.5x scale

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.