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Finding the Fourth Proportional to 645,944.60, 974,984.19 and 645,944.60

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Solution

The fourth proportional to 645,944.60, 974,984.19 and 645,944.60 is: 974,984.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,944.60 : 974,984.19 = 645,944.60 : x
  2. Step 2: Convert to fraction form
    645,944.60/974,984.19 = 645,944.60/x
  3. Step 3: Cross multiply
    645,944.60x = 974,984.19 × 645,944.60
  4. Step 4: Simplify right side
    645,944.60x = 629,785,772,615.87
  5. Step 5: Solve for x
    x = 629,785,772,615.87/645,944.60
  6. Step 6: Final answer
    x = 974,984.19

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.