Home / 630,552.20-870,083.70-401,135.88

Finding the Fourth Proportional to 630,552.20, 870,083.70 and 401,135.88

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Solution

The fourth proportional to 630,552.20, 870,083.70 and 401,135.88 is: 553,517.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,552.20 : 870,083.70 = 401,135.88 : x
  2. Step 2: Convert to fraction form
    630,552.20/870,083.70 = 401,135.88/x
  3. Step 3: Cross multiply
    630,552.20x = 870,083.70 × 401,135.88
  4. Step 4: Simplify right side
    630,552.20x = 349,021,790,673.16
  5. Step 5: Solve for x
    x = 349,021,790,673.16/630,552.20
  6. Step 6: Final answer
    x = 553,517.68

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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.