Home / 519,938.56-779,935.65-145,990.72

Finding the Fourth Proportional to 519,938.56, 779,935.65 and 145,990.72

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Solution

The fourth proportional to 519,938.56, 779,935.65 and 145,990.72 is: 218,993.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,938.56 : 779,935.65 = 145,990.72 : x
  2. Step 2: Convert to fraction form
    519,938.56/779,935.65 = 145,990.72/x
  3. Step 3: Cross multiply
    519,938.56x = 779,935.65 × 145,990.72
  4. Step 4: Simplify right side
    519,938.56x = 113,863,367,097.17
  5. Step 5: Solve for x
    x = 113,863,367,097.17/519,938.56
  6. Step 6: Final answer
    x = 218,993.89

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Similar ratio
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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.