Home / 862,279.79-1,189,982.81-480,306.74

Finding the Fourth Proportional to 862,279.79, 1,189,982.81 and 480,306.74

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Solution

The fourth proportional to 862,279.79, 1,189,982.81 and 480,306.74 is: 662,843.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,279.79 : 1,189,982.81 = 480,306.74 : x
  2. Step 2: Convert to fraction form
    862,279.79/1,189,982.81 = 480,306.74/x
  3. Step 3: Cross multiply
    862,279.79x = 1,189,982.81 × 480,306.74
  4. Step 4: Simplify right side
    862,279.79x = 571,556,759,377.99
  5. Step 5: Solve for x
    x = 571,556,759,377.99/862,279.79
  6. Step 6: Final answer
    x = 662,843.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.