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Finding the Fourth Proportional to 497,999.73, 686,420.18 and 352,854.21

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Solution

The fourth proportional to 497,999.73, 686,420.18 and 352,854.21 is: 486,358.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,999.73 : 686,420.18 = 352,854.21 : x
  2. Step 2: Convert to fraction form
    497,999.73/686,420.18 = 352,854.21/x
  3. Step 3: Cross multiply
    497,999.73x = 686,420.18 × 352,854.21
  4. Step 4: Simplify right side
    497,999.73x = 242,206,250,341.96
  5. Step 5: Solve for x
    x = 242,206,250,341.96/497,999.73
  6. Step 6: Final answer
    x = 486,358.20

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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.