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Finding the Fourth Proportional to 889,458.32, 1,227,453 and 487,050.32

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Solution

The fourth proportional to 889,458.32, 1,227,453 and 487,050.32 is: 672,129.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,458.32 : 1,227,453 = 487,050.32 : x
  2. Step 2: Convert to fraction form
    889,458.32/1,227,453 = 487,050.32/x
  3. Step 3: Cross multiply
    889,458.32x = 1,227,453 × 487,050.32
  4. Step 4: Simplify right side
    889,458.32x = 597,831,376,434.96
  5. Step 5: Solve for x
    x = 597,831,376,434.96/889,458.32
  6. Step 6: Final answer
    x = 672,129.73

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.