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Finding the Fourth Proportional to 960,661.74, 1,441,491.06 and 428,058.89

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Solution

The fourth proportional to 960,661.74, 1,441,491.06 and 428,058.89 is: 642,310.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    960,661.74 : 1,441,491.06 = 428,058.89 : x
  2. Step 2: Convert to fraction form
    960,661.74/1,441,491.06 = 428,058.89/x
  3. Step 3: Cross multiply
    960,661.74x = 1,441,491.06 × 428,058.89
  4. Step 4: Simplify right side
    960,661.74x = 617,043,066,692.25
  5. Step 5: Solve for x
    x = 617,043,066,692.25/960,661.74
  6. Step 6: Final answer
    x = 642,310.44

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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.