Home / 679,979.90-1,019,969.85-306,731.90

Finding the Fourth Proportional to 679,979.90, 1,019,969.85 and 306,731.90

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Solution

The fourth proportional to 679,979.90, 1,019,969.85 and 306,731.90 is: 460,097.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,979.90 : 1,019,969.85 = 306,731.90 : x
  2. Step 2: Convert to fraction form
    679,979.90/1,019,969.85 = 306,731.90/x
  3. Step 3: Cross multiply
    679,979.90x = 1,019,969.85 × 306,731.90
  4. Step 4: Simplify right side
    679,979.90x = 312,857,290,033.22
  5. Step 5: Solve for x
    x = 312,857,290,033.22/679,979.90
  6. Step 6: Final answer
    x = 460,097.85

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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.