Home / 638,201.77-880,718.40-383,552.96

Finding the Fourth Proportional to 638,201.77, 880,718.40 and 383,552.96

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Solution

The fourth proportional to 638,201.77, 880,718.40 and 383,552.96 is: 529,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,201.77 : 880,718.40 = 383,552.96 : x
  2. Step 2: Convert to fraction form
    638,201.77/880,718.40 = 383,552.96/x
  3. Step 3: Cross multiply
    638,201.77x = 880,718.40 × 383,552.96
  4. Step 4: Simplify right side
    638,201.77x = 337,802,144,842.87
  5. Step 5: Solve for x
    x = 337,802,144,842.87/638,201.77
  6. Step 6: Final answer
    x = 529,303.05

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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.