Home / 630,600.72-870,229.02-404,246.28

Finding the Fourth Proportional to 630,600.72, 870,229.02 and 404,246.28

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Solution

The fourth proportional to 630,600.72, 870,229.02 and 404,246.28 is: 557,859.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,600.72 : 870,229.02 = 404,246.28 : x
  2. Step 2: Convert to fraction form
    630,600.72/870,229.02 = 404,246.28/x
  3. Step 3: Cross multiply
    630,600.72x = 870,229.02 × 404,246.28
  4. Step 4: Simplify right side
    630,600.72x = 351,786,844,083.05
  5. Step 5: Solve for x
    x = 351,786,844,083.05/630,600.72
  6. Step 6: Final answer
    x = 557,859.88

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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.