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Finding the Fourth Proportional to 498,278.60, 696,015.40 and 498,278.60

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Solution

The fourth proportional to 498,278.60, 696,015.40 and 498,278.60 is: 696,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,278.60 : 696,015.40 = 498,278.60 : x
  2. Step 2: Convert to fraction form
    498,278.60/696,015.40 = 498,278.60/x
  3. Step 3: Cross multiply
    498,278.60x = 696,015.40 × 498,278.60
  4. Step 4: Simplify right side
    498,278.60x = 346,809,579,090.44
  5. Step 5: Solve for x
    x = 346,809,579,090.44/498,278.60
  6. Step 6: Final answer
    x = 696,015.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.