Home / 519,789.09-717,311.45-290,356.04

Finding the Fourth Proportional to 519,789.09, 717,311.45 and 290,356.04

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Solution

The fourth proportional to 519,789.09, 717,311.45 and 290,356.04 is: 400,692.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,789.09 : 717,311.45 = 290,356.04 : x
  2. Step 2: Convert to fraction form
    519,789.09/717,311.45 = 290,356.04/x
  3. Step 3: Cross multiply
    519,789.09x = 717,311.45 × 290,356.04
  4. Step 4: Simplify right side
    519,789.09x = 208,275,712,410.16
  5. Step 5: Solve for x
    x = 208,275,712,410.16/519,789.09
  6. Step 6: Final answer
    x = 400,692.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.