Home / 1,521,979.44-2,099,320.07-978,802.35

Finding the Fourth Proportional to 1,521,979.44, 2,099,320.07 and 978,802.35

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Solution

The fourth proportional to 1,521,979.44, 2,099,320.07 and 978,802.35 is: 1,350,096.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,979.44 : 2,099,320.07 = 978,802.35 : x
  2. Step 2: Convert to fraction form
    1,521,979.44/2,099,320.07 = 978,802.35/x
  3. Step 3: Cross multiply
    1,521,979.44x = 2,099,320.07 × 978,802.35
  4. Step 4: Simplify right side
    1,521,979.44x = 2,054,819,413,024.15
  5. Step 5: Solve for x
    x = 2,054,819,413,024.15/1,521,979.44
  6. Step 6: Final answer
    x = 1,350,096.70

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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.