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Finding the Fourth Proportional to 603,969.60, 904,860.90 and 478,435.80

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Solution

The fourth proportional to 603,969.60, 904,860.90 and 478,435.80 is: 716,787.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,969.60 : 904,860.90 = 478,435.80 : x
  2. Step 2: Convert to fraction form
    603,969.60/904,860.90 = 478,435.80/x
  3. Step 3: Cross multiply
    603,969.60x = 904,860.90 × 478,435.80
  4. Step 4: Simplify right side
    603,969.60x = 432,917,848,580.22
  5. Step 5: Solve for x
    x = 432,917,848,580.22/603,969.60
  6. Step 6: Final answer
    x = 716,787.48

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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.