Home / 716,623.99-988,911.22-389,938.27

Finding the Fourth Proportional to 716,623.99, 988,911.22 and 389,938.27

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Solution

The fourth proportional to 716,623.99, 988,911.22 and 389,938.27 is: 538,098.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,623.99 : 988,911.22 = 389,938.27 : x
  2. Step 2: Convert to fraction form
    716,623.99/988,911.22 = 389,938.27/x
  3. Step 3: Cross multiply
    716,623.99x = 988,911.22 × 389,938.27
  4. Step 4: Simplify right side
    716,623.99x = 385,614,330,310.39
  5. Step 5: Solve for x
    x = 385,614,330,310.39/716,623.99
  6. Step 6: Final answer
    x = 538,098.55

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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.