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Finding the Fourth Proportional to 672,305.35, 1,008,458.03 and 520,090.15

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Solution

The fourth proportional to 672,305.35, 1,008,458.03 and 520,090.15 is: 780,135.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,305.35 : 1,008,458.03 = 520,090.15 : x
  2. Step 2: Convert to fraction form
    672,305.35/1,008,458.03 = 520,090.15/x
  3. Step 3: Cross multiply
    672,305.35x = 1,008,458.03 × 520,090.15
  4. Step 4: Simplify right side
    672,305.35x = 524,489,085,490.95
  5. Step 5: Solve for x
    x = 524,489,085,490.95/672,305.35
  6. Step 6: Final answer
    x = 780,135.23

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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.