Home / 621,721.78-932,582.49-172,442.70

Finding the Fourth Proportional to 621,721.78, 932,582.49 and 172,442.70

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Solution

The fourth proportional to 621,721.78, 932,582.49 and 172,442.70 is: 258,664.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,721.78 : 932,582.49 = 172,442.70 : x
  2. Step 2: Convert to fraction form
    621,721.78/932,582.49 = 172,442.70/x
  3. Step 3: Cross multiply
    621,721.78x = 932,582.49 × 172,442.70
  4. Step 4: Simplify right side
    621,721.78x = 160,817,039,763.77
  5. Step 5: Solve for x
    x = 160,817,039,763.77/621,721.78
  6. Step 6: Final answer
    x = 258,664.00

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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.