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Finding the Fourth Proportional to 978,363.80, 1,467,545.70 and 605,115.80

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Solution

The fourth proportional to 978,363.80, 1,467,545.70 and 605,115.80 is: 907,673.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,363.80 : 1,467,545.70 = 605,115.80 : x
  2. Step 2: Convert to fraction form
    978,363.80/1,467,545.70 = 605,115.80/x
  3. Step 3: Cross multiply
    978,363.80x = 1,467,545.70 × 605,115.80
  4. Step 4: Simplify right side
    978,363.80x = 888,035,090,292.06
  5. Step 5: Solve for x
    x = 888,035,090,292.06/978,363.80
  6. Step 6: Final answer
    x = 907,673.70

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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.