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Finding the Fourth Proportional to 603,003.40, 904,505.10 and 319,568.20

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Solution

The fourth proportional to 603,003.40, 904,505.10 and 319,568.20 is: 479,352.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,003.40 : 904,505.10 = 319,568.20 : x
  2. Step 2: Convert to fraction form
    603,003.40/904,505.10 = 319,568.20/x
  3. Step 3: Cross multiply
    603,003.40x = 904,505.10 × 319,568.20
  4. Step 4: Simplify right side
    603,003.40x = 289,051,066,697.82
  5. Step 5: Solve for x
    x = 289,051,066,697.82/603,003.40
  6. Step 6: Final answer
    x = 479,352.30

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Double scale
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Similar ratio
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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.