Home / 985,714.44-1,478,753.64-311,965.08

Finding the Fourth Proportional to 985,714.44, 1,478,753.64 and 311,965.08

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Solution

The fourth proportional to 985,714.44, 1,478,753.64 and 311,965.08 is: 468,005.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,714.44 : 1,478,753.64 = 311,965.08 : x
  2. Step 2: Convert to fraction form
    985,714.44/1,478,753.64 = 311,965.08/x
  3. Step 3: Cross multiply
    985,714.44x = 1,478,753.64 × 311,965.08
  4. Step 4: Simplify right side
    985,714.44x = 461,319,497,602.89
  5. Step 5: Solve for x
    x = 461,319,497,602.89/985,714.44
  6. Step 6: Final answer
    x = 468,005.21

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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.