Home / 639,053.09-958,710.85-259,972.86

Finding the Fourth Proportional to 639,053.09, 958,710.85 and 259,972.86

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Solution

The fourth proportional to 639,053.09, 958,710.85 and 259,972.86 is: 390,012.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,053.09 : 958,710.85 = 259,972.86 : x
  2. Step 2: Convert to fraction form
    639,053.09/958,710.85 = 259,972.86/x
  3. Step 3: Cross multiply
    639,053.09x = 958,710.85 × 259,972.86
  4. Step 4: Simplify right side
    639,053.09x = 249,238,800,937.60
  5. Step 5: Solve for x
    x = 249,238,800,937.60/639,053.09
  6. Step 6: Final answer
    x = 390,012.67

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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.