Home / 621,905.94-932,864.13-172,661.84

Finding the Fourth Proportional to 621,905.94, 932,864.13 and 172,661.84

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Solution

The fourth proportional to 621,905.94, 932,864.13 and 172,661.84 is: 258,994.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,905.94 : 932,864.13 = 172,661.84 : x
  2. Step 2: Convert to fraction form
    621,905.94/932,864.13 = 172,661.84/x
  3. Step 3: Cross multiply
    621,905.94x = 932,864.13 × 172,661.84
  4. Step 4: Simplify right side
    621,905.94x = 161,070,039,919.61
  5. Step 5: Solve for x
    x = 161,070,039,919.61/621,905.94
  6. Step 6: Final answer
    x = 258,994.21

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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.