Home / 939,398.58-1,408,485.51-399,374.82

Finding the Fourth Proportional to 939,398.58, 1,408,485.51 and 399,374.82

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Solution

The fourth proportional to 939,398.58, 1,408,485.51 and 399,374.82 is: 598,801.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,398.58 : 1,408,485.51 = 399,374.82 : x
  2. Step 2: Convert to fraction form
    939,398.58/1,408,485.51 = 399,374.82/x
  3. Step 3: Cross multiply
    939,398.58x = 1,408,485.51 × 399,374.82
  4. Step 4: Simplify right side
    939,398.58x = 562,513,647,028.86
  5. Step 5: Solve for x
    x = 562,513,647,028.86/939,398.58
  6. Step 6: Final answer
    x = 598,801.89

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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.