Home / 678,788.19-936,697.41-407,006.10

Finding the Fourth Proportional to 678,788.19, 936,697.41 and 407,006.10

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Solution

The fourth proportional to 678,788.19, 936,697.41 and 407,006.10 is: 561,650.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,788.19 : 936,697.41 = 407,006.10 : x
  2. Step 2: Convert to fraction form
    678,788.19/936,697.41 = 407,006.10/x
  3. Step 3: Cross multiply
    678,788.19x = 936,697.41 × 407,006.10
  4. Step 4: Simplify right side
    678,788.19x = 381,241,559,724.20
  5. Step 5: Solve for x
    x = 381,241,559,724.20/678,788.19
  6. Step 6: Final answer
    x = 561,650.25

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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.