Home / 678,550,463.69-936,344,459.26-381,176,550.41

Finding the Fourth Proportional to 678,550,463.69, 936,344,459.26 and 381,176,550.41

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Solution

The fourth proportional to 678,550,463.69, 936,344,459.26 and 381,176,550.41 is: 525,992,641.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,550,463.69 : 936,344,459.26 = 381,176,550.41 : x
  2. Step 2: Convert to fraction form
    678,550,463.69/936,344,459.26 = 381,176,550.41/x
  3. Step 3: Cross multiply
    678,550,463.69x = 936,344,459.26 × 381,176,550.41
  4. Step 4: Simplify right side
    678,550,463.69x = 356,912,550,977,631,552
  5. Step 5: Solve for x
    x = 356,912,550,977,631,552/678,550,463.69
  6. Step 6: Final answer
    x = 525,992,641.78

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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.