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Finding the Fourth Proportional to 603,963.40, 904,908.30 and 287,739.40

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Solution

The fourth proportional to 603,963.40, 904,908.30 and 287,739.40 is: 431,115.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,963.40 : 904,908.30 = 287,739.40 : x
  2. Step 2: Convert to fraction form
    603,963.40/904,908.30 = 287,739.40/x
  3. Step 3: Cross multiply
    603,963.40x = 904,908.30 × 287,739.40
  4. Step 4: Simplify right side
    603,963.40x = 260,377,771,297.02
  5. Step 5: Solve for x
    x = 260,377,771,297.02/603,963.40
  6. Step 6: Final answer
    x = 431,115.15

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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.