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Finding the Fourth Proportional to 603,942.60, 904,820.40 and 478,408.80

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Solution

The fourth proportional to 603,942.60, 904,820.40 and 478,408.80 is: 716,746.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,942.60 : 904,820.40 = 478,408.80 : x
  2. Step 2: Convert to fraction form
    603,942.60/904,820.40 = 478,408.80/x
  3. Step 3: Cross multiply
    603,942.60x = 904,820.40 × 478,408.80
  4. Step 4: Simplify right side
    603,942.60x = 432,874,041,779.52
  5. Step 5: Solve for x
    x = 432,874,041,779.52/603,942.60
  6. Step 6: Final answer
    x = 716,746.99

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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.