Home / 721,849.64-995,923.50-419,985.32

Finding the Fourth Proportional to 721,849.64, 995,923.50 and 419,985.32

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Solution

The fourth proportional to 721,849.64, 995,923.50 and 419,985.32 is: 579,446.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,849.64 : 995,923.50 = 419,985.32 : x
  2. Step 2: Convert to fraction form
    721,849.64/995,923.50 = 419,985.32/x
  3. Step 3: Cross multiply
    721,849.64x = 995,923.50 × 419,985.32
  4. Step 4: Simplify right side
    721,849.64x = 418,273,249,843.02
  5. Step 5: Solve for x
    x = 418,273,249,843.02/721,849.64
  6. Step 6: Final answer
    x = 579,446.50

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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.