Home / 1,085,643.60-1,628,465.40-985,916.40

Finding the Fourth Proportional to 1,085,643.60, 1,628,465.40 and 985,916.40

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Solution

The fourth proportional to 1,085,643.60, 1,628,465.40 and 985,916.40 is: 1,478,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085,643.60 : 1,628,465.40 = 985,916.40 : x
  2. Step 2: Convert to fraction form
    1,085,643.60/1,628,465.40 = 985,916.40/x
  3. Step 3: Cross multiply
    1,085,643.60x = 1,628,465.40 × 985,916.40
  4. Step 4: Simplify right side
    1,085,643.60x = 1,605,530,744,692.56
  5. Step 5: Solve for x
    x = 1,605,530,744,692.56/1,085,643.60
  6. Step 6: Final answer
    x = 1,478,874.60

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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.