Home / 891,521.92-1,230,260.16-489,105.28

Finding the Fourth Proportional to 891,521.92, 1,230,260.16 and 489,105.28

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Solution

The fourth proportional to 891,521.92, 1,230,260.16 and 489,105.28 is: 674,943.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,521.92 : 1,230,260.16 = 489,105.28 : x
  2. Step 2: Convert to fraction form
    891,521.92/1,230,260.16 = 489,105.28/x
  3. Step 3: Cross multiply
    891,521.92x = 1,230,260.16 × 489,105.28
  4. Step 4: Simplify right side
    891,521.92x = 601,726,740,029.65
  5. Step 5: Solve for x
    x = 601,726,740,029.65/891,521.92
  6. Step 6: Final answer
    x = 674,943.29

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Double scale
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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.