Home / 639,298.20-959,465.70-618,562.20

Finding the Fourth Proportional to 639,298.20, 959,465.70 and 618,562.20

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Solution

The fourth proportional to 639,298.20, 959,465.70 and 618,562.20 is: 928,344.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,298.20 : 959,465.70 = 618,562.20 : x
  2. Step 2: Convert to fraction form
    639,298.20/959,465.70 = 618,562.20/x
  3. Step 3: Cross multiply
    639,298.20x = 959,465.70 × 618,562.20
  4. Step 4: Simplify right side
    639,298.20x = 593,489,214,216.54
  5. Step 5: Solve for x
    x = 593,489,214,216.54/639,298.20
  6. Step 6: Final answer
    x = 928,344.89

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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.