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Finding the Fourth Proportional to 660,799.32, 990,714.16 and 211,261.47

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Solution

The fourth proportional to 660,799.32, 990,714.16 and 211,261.47 is: 316,737.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,799.32 : 990,714.16 = 211,261.47 : x
  2. Step 2: Convert to fraction form
    660,799.32/990,714.16 = 211,261.47/x
  3. Step 3: Cross multiply
    660,799.32x = 990,714.16 × 211,261.47
  4. Step 4: Simplify right side
    660,799.32x = 209,299,729,791.42
  5. Step 5: Solve for x
    x = 209,299,729,791.42/660,799.32
  6. Step 6: Final answer
    x = 316,737.21

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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.