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Finding the Fourth Proportional to 497,998.73, 686,418.81 and 352,853.21

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Solution

The fourth proportional to 497,998.73, 686,418.81 and 352,853.21 is: 486,356.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,998.73 : 686,418.81 = 352,853.21 : x
  2. Step 2: Convert to fraction form
    497,998.73/686,418.81 = 352,853.21/x
  3. Step 3: Cross multiply
    497,998.73x = 686,418.81 × 352,853.21
  4. Step 4: Simplify right side
    497,998.73x = 242,205,080,905.73
  5. Step 5: Solve for x
    x = 242,205,080,905.73/497,998.73
  6. Step 6: Final answer
    x = 486,356.82

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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.