Home / 657,629.70-986,444.55-445,053.30

Finding the Fourth Proportional to 657,629.70, 986,444.55 and 445,053.30

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Solution

The fourth proportional to 657,629.70, 986,444.55 and 445,053.30 is: 667,579.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,629.70 : 986,444.55 = 445,053.30 : x
  2. Step 2: Convert to fraction form
    657,629.70/986,444.55 = 445,053.30/x
  3. Step 3: Cross multiply
    657,629.70x = 986,444.55 × 445,053.30
  4. Step 4: Simplify right side
    657,629.70x = 439,020,402,244.52
  5. Step 5: Solve for x
    x = 439,020,402,244.52/657,629.70
  6. Step 6: Final answer
    x = 667,579.95

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Double scale
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Similar ratio
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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.