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Finding the Fourth Proportional to 603,485.40, 904,191.30 and 287,261.40

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Solution

The fourth proportional to 603,485.40, 904,191.30 and 287,261.40 is: 430,398.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,485.40 : 904,191.30 = 287,261.40 : x
  2. Step 2: Convert to fraction form
    603,485.40/904,191.30 = 287,261.40/x
  3. Step 3: Cross multiply
    603,485.40x = 904,191.30 × 287,261.40
  4. Step 4: Simplify right side
    603,485.40x = 259,739,258,705.82
  5. Step 5: Solve for x
    x = 259,739,258,705.82/603,485.40
  6. Step 6: Final answer
    x = 430,398.58

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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.