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Finding the Fourth Proportional to 613,616.40, 918,869.40 and 585,622.80

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Solution

The fourth proportional to 613,616.40, 918,869.40 and 585,622.80 is: 876,949.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,616.40 : 918,869.40 = 585,622.80 : x
  2. Step 2: Convert to fraction form
    613,616.40/918,869.40 = 585,622.80/x
  3. Step 3: Cross multiply
    613,616.40x = 918,869.40 × 585,622.80
  4. Step 4: Simplify right side
    613,616.40x = 538,110,870,862.32
  5. Step 5: Solve for x
    x = 538,110,870,862.32/613,616.40
  6. Step 6: Final answer
    x = 876,949.95

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1.5x scale

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.