Home / 656,130.98-899,555.47-644,173.56

Finding the Fourth Proportional to 656,130.98, 899,555.47 and 644,173.56

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Solution

The fourth proportional to 656,130.98, 899,555.47 and 644,173.56 is: 883,161.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,130.98 : 899,555.47 = 644,173.56 : x
  2. Step 2: Convert to fraction form
    656,130.98/899,555.47 = 644,173.56/x
  3. Step 3: Cross multiply
    656,130.98x = 899,555.47 × 644,173.56
  4. Step 4: Simplify right side
    656,130.98x = 579,469,851,540.42
  5. Step 5: Solve for x
    x = 579,469,851,540.42/656,130.98
  6. Step 6: Final answer
    x = 883,161.85

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.