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Finding the Fourth Proportional to 603,638.70, 905,458.05 and 463,670.70

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Solution

The fourth proportional to 603,638.70, 905,458.05 and 463,670.70 is: 695,506.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,638.70 : 905,458.05 = 463,670.70 : x
  2. Step 2: Convert to fraction form
    603,638.70/905,458.05 = 463,670.70/x
  3. Step 3: Cross multiply
    603,638.70x = 905,458.05 × 463,670.70
  4. Step 4: Simplify right side
    603,638.70x = 419,834,367,864.14
  5. Step 5: Solve for x
    x = 419,834,367,864.14/603,638.70
  6. Step 6: Final answer
    x = 695,506.05

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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.