Home / 680,738.58-939,709.98-484,631.64

Finding the Fourth Proportional to 680,738.58, 939,709.98 and 484,631.64

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Solution

The fourth proportional to 680,738.58, 939,709.98 and 484,631.64 is: 668,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,738.58 : 939,709.98 = 484,631.64 : x
  2. Step 2: Convert to fraction form
    680,738.58/939,709.98 = 484,631.64/x
  3. Step 3: Cross multiply
    680,738.58x = 939,709.98 × 484,631.64
  4. Step 4: Simplify right side
    680,738.58x = 455,413,188,731.77
  5. Step 5: Solve for x
    x = 455,413,188,731.77/680,738.58
  6. Step 6: Final answer
    x = 668,998.65

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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.