Home / 989,545.60-1,388,163.20-989,545.60

Finding the Fourth Proportional to 989,545.60, 1,388,163.20 and 989,545.60

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Solution

The fourth proportional to 989,545.60, 1,388,163.20 and 989,545.60 is: 1,388,163.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,545.60 : 1,388,163.20 = 989,545.60 : x
  2. Step 2: Convert to fraction form
    989,545.60/1,388,163.20 = 989,545.60/x
  3. Step 3: Cross multiply
    989,545.60x = 1,388,163.20 × 989,545.60
  4. Step 4: Simplify right side
    989,545.60x = 1,373,650,786,641.92
  5. Step 5: Solve for x
    x = 1,373,650,786,641.92/989,545.60
  6. Step 6: Final answer
    x = 1,388,163.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.