Home / 639,566.10-958,085.55-415,082.70

Finding the Fourth Proportional to 639,566.10, 958,085.55 and 415,082.70

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Solution

The fourth proportional to 639,566.10, 958,085.55 and 415,082.70 is: 621,803.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,566.10 : 958,085.55 = 415,082.70 : x
  2. Step 2: Convert to fraction form
    639,566.10/958,085.55 = 415,082.70/x
  3. Step 3: Cross multiply
    639,566.10x = 958,085.55 × 415,082.70
  4. Step 4: Simplify right side
    639,566.10x = 397,684,736,924.99
  5. Step 5: Solve for x
    x = 397,684,736,924.99/639,566.10
  6. Step 6: Final answer
    x = 621,803.97

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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.