Home / 486,906.36-672,043.02-316,845.24

Finding the Fourth Proportional to 486,906.36, 672,043.02 and 316,845.24

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Solution

The fourth proportional to 486,906.36, 672,043.02 and 316,845.24 is: 437,319.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,906.36 : 672,043.02 = 316,845.24 : x
  2. Step 2: Convert to fraction form
    486,906.36/672,043.02 = 316,845.24/x
  3. Step 3: Cross multiply
    486,906.36x = 672,043.02 × 316,845.24
  4. Step 4: Simplify right side
    486,906.36x = 212,933,631,962.23
  5. Step 5: Solve for x
    x = 212,933,631,962.23/486,906.36
  6. Step 6: Final answer
    x = 437,319.47

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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.