Home / 816,134.20-1,223,763.90-342,284.20

Finding the Fourth Proportional to 816,134.20, 1,223,763.90 and 342,284.20

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Solution

The fourth proportional to 816,134.20, 1,223,763.90 and 342,284.20 is: 513,242.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,134.20 : 1,223,763.90 = 342,284.20 : x
  2. Step 2: Convert to fraction form
    816,134.20/1,223,763.90 = 342,284.20/x
  3. Step 3: Cross multiply
    816,134.20x = 1,223,763.90 × 342,284.20
  4. Step 4: Simplify right side
    816,134.20x = 418,875,047,500.38
  5. Step 5: Solve for x
    x = 418,875,047,500.38/816,134.20
  6. Step 6: Final answer
    x = 513,242.86

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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.