Home / 659,837.34-989,629.65-280,966.86

Finding the Fourth Proportional to 659,837.34, 989,629.65 and 280,966.86

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Solution

The fourth proportional to 659,837.34, 989,629.65 and 280,966.86 is: 421,396.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,837.34 : 989,629.65 = 280,966.86 : x
  2. Step 2: Convert to fraction form
    659,837.34/989,629.65 = 280,966.86/x
  3. Step 3: Cross multiply
    659,837.34x = 989,629.65 × 280,966.86
  4. Step 4: Simplify right side
    659,837.34x = 278,053,135,323.40
  5. Step 5: Solve for x
    x = 278,053,135,323.40/659,837.34
  6. Step 6: Final answer
    x = 421,396.48

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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.