Home / 699,728.42-965,614.37-389,628.83

Finding the Fourth Proportional to 699,728.42, 965,614.37 and 389,628.83

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Solution

The fourth proportional to 699,728.42, 965,614.37 and 389,628.83 is: 537,681.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,728.42 : 965,614.37 = 389,628.83 : x
  2. Step 2: Convert to fraction form
    699,728.42/965,614.37 = 389,628.83/x
  3. Step 3: Cross multiply
    699,728.42x = 965,614.37 × 389,628.83
  4. Step 4: Simplify right side
    699,728.42x = 376,231,197,680.18
  5. Step 5: Solve for x
    x = 376,231,197,680.18/699,728.42
  6. Step 6: Final answer
    x = 537,681.74

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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.