Home / 679,117.45-936,977.71-407,086.09

Finding the Fourth Proportional to 679,117.45, 936,977.71 and 407,086.09

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Solution

The fourth proportional to 679,117.45, 936,977.71 and 407,086.09 is: 561,656.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,117.45 : 936,977.71 = 407,086.09 : x
  2. Step 2: Convert to fraction form
    679,117.45/936,977.71 = 407,086.09/x
  3. Step 3: Cross multiply
    679,117.45x = 936,977.71 × 407,086.09
  4. Step 4: Simplify right side
    679,117.45x = 381,430,588,003.18
  5. Step 5: Solve for x
    x = 381,430,588,003.18/679,117.45
  6. Step 6: Final answer
    x = 561,656.29

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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.