Home / 679,119.06-936,979.93-407,087.70

Finding the Fourth Proportional to 679,119.06, 936,979.93 and 407,087.70

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Solution

The fourth proportional to 679,119.06, 936,979.93 and 407,087.70 is: 561,658.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,119.06 : 936,979.93 = 407,087.70 : x
  2. Step 2: Convert to fraction form
    679,119.06/936,979.93 = 407,087.70/x
  3. Step 3: Cross multiply
    679,119.06x = 936,979.93 × 407,087.70
  4. Step 4: Simplify right side
    679,119.06x = 381,433,004,649.86
  5. Step 5: Solve for x
    x = 381,433,004,649.86/679,119.06
  6. Step 6: Final answer
    x = 561,658.52

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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.