Home / 498,318.76-687,464.16-304,734.93

Finding the Fourth Proportional to 498,318.76, 687,464.16 and 304,734.93

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Solution

The fourth proportional to 498,318.76, 687,464.16 and 304,734.93 is: 420,402.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,318.76 : 687,464.16 = 304,734.93 : x
  2. Step 2: Convert to fraction form
    498,318.76/687,464.16 = 304,734.93/x
  3. Step 3: Cross multiply
    498,318.76x = 687,464.16 × 304,734.93
  4. Step 4: Simplify right side
    498,318.76x = 209,494,342,675.11
  5. Step 5: Solve for x
    x = 209,494,342,675.11/498,318.76
  6. Step 6: Final answer
    x = 420,402.28

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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.