Home / 659,619.80-989,429.70-622,878.20

Finding the Fourth Proportional to 659,619.80, 989,429.70 and 622,878.20

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Solution

The fourth proportional to 659,619.80, 989,429.70 and 622,878.20 is: 934,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,619.80 : 989,429.70 = 622,878.20 : x
  2. Step 2: Convert to fraction form
    659,619.80/989,429.70 = 622,878.20/x
  3. Step 3: Cross multiply
    659,619.80x = 989,429.70 × 622,878.20
  4. Step 4: Simplify right side
    659,619.80x = 616,294,190,562.54
  5. Step 5: Solve for x
    x = 616,294,190,562.54/659,619.80
  6. Step 6: Final answer
    x = 934,317.30

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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.