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Finding the Fourth Proportional to 603,906.90, 904,823.55 and 287,682.90

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Solution

The fourth proportional to 603,906.90, 904,823.55 and 287,682.90 is: 431,030.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,906.90 : 904,823.55 = 287,682.90 : x
  2. Step 2: Convert to fraction form
    603,906.90/904,823.55 = 287,682.90/x
  3. Step 3: Cross multiply
    603,906.90x = 904,823.55 × 287,682.90
  4. Step 4: Simplify right side
    603,906.90x = 260,302,262,852.30
  5. Step 5: Solve for x
    x = 260,302,262,852.30/603,906.90
  6. Step 6: Final answer
    x = 431,030.45

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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.