Home / 724,458.40-1,086,687.60-645,661.60

Finding the Fourth Proportional to 724,458.40, 1,086,687.60 and 645,661.60

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Solution

The fourth proportional to 724,458.40, 1,086,687.60 and 645,661.60 is: 968,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,458.40 : 1,086,687.60 = 645,661.60 : x
  2. Step 2: Convert to fraction form
    724,458.40/1,086,687.60 = 645,661.60/x
  3. Step 3: Cross multiply
    724,458.40x = 1,086,687.60 × 645,661.60
  4. Step 4: Simplify right side
    724,458.40x = 701,632,454,516.16
  5. Step 5: Solve for x
    x = 701,632,454,516.16/724,458.40
  6. Step 6: Final answer
    x = 968,492.40

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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.