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Finding the Fourth Proportional to 603,444.60, 904,130.10 and 318,713.40

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Solution

The fourth proportional to 603,444.60, 904,130.10 and 318,713.40 is: 477,522.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,444.60 : 904,130.10 = 318,713.40 : x
  2. Step 2: Convert to fraction form
    603,444.60/904,130.10 = 318,713.40/x
  3. Step 3: Cross multiply
    603,444.60x = 904,130.10 × 318,713.40
  4. Step 4: Simplify right side
    603,444.60x = 288,158,378,213.34
  5. Step 5: Solve for x
    x = 288,158,378,213.34/603,444.60
  6. Step 6: Final answer
    x = 477,522.51

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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.