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Finding the Fourth Proportional to 632,927,581.60, 949,391,372.40 and 388,039,568.80

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Solution

The fourth proportional to 632,927,581.60, 949,391,372.40 and 388,039,568.80 is: 582,059,353.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,927,581.60 : 949,391,372.40 = 388,039,568.80 : x
  2. Step 2: Convert to fraction form
    632,927,581.60/949,391,372.40 = 388,039,568.80/x
  3. Step 3: Cross multiply
    632,927,581.60x = 949,391,372.40 × 388,039,568.80
  4. Step 4: Simplify right side
    632,927,581.60x = 368,401,418,768,536,192
  5. Step 5: Solve for x
    x = 368,401,418,768,536,192/632,927,581.60
  6. Step 6: Final answer
    x = 582,059,353.20

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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.