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Finding the Fourth Proportional to 486,034.60, 678,873.80 and 486,034.60

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Solution

The fourth proportional to 486,034.60, 678,873.80 and 486,034.60 is: 678,873.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,034.60 : 678,873.80 = 486,034.60 : x
  2. Step 2: Convert to fraction form
    486,034.60/678,873.80 = 486,034.60/x
  3. Step 3: Cross multiply
    486,034.60x = 678,873.80 × 486,034.60
  4. Step 4: Simplify right side
    486,034.60x = 329,956,155,833.48
  5. Step 5: Solve for x
    x = 329,956,155,833.48/486,034.60
  6. Step 6: Final answer
    x = 678,873.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.