Home / 821,603.45-1,133,805.09-459,089.78

Finding the Fourth Proportional to 821,603.45, 1,133,805.09 and 459,089.78

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Solution

The fourth proportional to 821,603.45, 1,133,805.09 and 459,089.78 is: 633,539.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,603.45 : 1,133,805.09 = 459,089.78 : x
  2. Step 2: Convert to fraction form
    821,603.45/1,133,805.09 = 459,089.78/x
  3. Step 3: Cross multiply
    821,603.45x = 1,133,805.09 × 459,089.78
  4. Step 4: Simplify right side
    821,603.45x = 520,518,325,383.54
  5. Step 5: Solve for x
    x = 520,518,325,383.54/821,603.45
  6. Step 6: Final answer
    x = 633,539.60

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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.