Home / 657,977.10-986,965.65-392,556.30

Finding the Fourth Proportional to 657,977.10, 986,965.65 and 392,556.30

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Solution

The fourth proportional to 657,977.10, 986,965.65 and 392,556.30 is: 588,834.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,977.10 : 986,965.65 = 392,556.30 : x
  2. Step 2: Convert to fraction form
    657,977.10/986,965.65 = 392,556.30/x
  3. Step 3: Cross multiply
    657,977.10x = 986,965.65 × 392,556.30
  4. Step 4: Simplify right side
    657,977.10x = 387,439,583,791.10
  5. Step 5: Solve for x
    x = 387,439,583,791.10/657,977.10
  6. Step 6: Final answer
    x = 588,834.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.