Home / 781,882.40-1,172,823.60-511,277.60

Finding the Fourth Proportional to 781,882.40, 1,172,823.60 and 511,277.60

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Solution

The fourth proportional to 781,882.40, 1,172,823.60 and 511,277.60 is: 766,916.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,882.40 : 1,172,823.60 = 511,277.60 : x
  2. Step 2: Convert to fraction form
    781,882.40/1,172,823.60 = 511,277.60/x
  3. Step 3: Cross multiply
    781,882.40x = 1,172,823.60 × 511,277.60
  4. Step 4: Simplify right side
    781,882.40x = 599,638,435,431.36
  5. Step 5: Solve for x
    x = 599,638,435,431.36/781,882.40
  6. Step 6: Final answer
    x = 766,916.40

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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.