Home / 692,652.80-1,038,979.20-396,921.60

Finding the Fourth Proportional to 692,652.80, 1,038,979.20 and 396,921.60

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Solution

The fourth proportional to 692,652.80, 1,038,979.20 and 396,921.60 is: 595,382.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,652.80 : 1,038,979.20 = 396,921.60 : x
  2. Step 2: Convert to fraction form
    692,652.80/1,038,979.20 = 396,921.60/x
  3. Step 3: Cross multiply
    692,652.80x = 1,038,979.20 × 396,921.60
  4. Step 4: Simplify right side
    692,652.80x = 412,393,286,430.72
  5. Step 5: Solve for x
    x = 412,393,286,430.72/692,652.80
  6. Step 6: Final answer
    x = 595,382.40

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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.