Home / 961,661.40-1,441,325.70-428,616.60

Finding the Fourth Proportional to 961,661.40, 1,441,325.70 and 428,616.60

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Solution

The fourth proportional to 961,661.40, 1,441,325.70 and 428,616.60 is: 642,405.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,661.40 : 1,441,325.70 = 428,616.60 : x
  2. Step 2: Convert to fraction form
    961,661.40/1,441,325.70 = 428,616.60/x
  3. Step 3: Cross multiply
    961,661.40x = 1,441,325.70 × 428,616.60
  4. Step 4: Simplify right side
    961,661.40x = 617,776,121,026.62
  5. Step 5: Solve for x
    x = 617,776,121,026.62/961,661.40
  6. Step 6: Final answer
    x = 642,405.03

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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.