Home / 776,971.86-1,165,457.79-278,685.78

Finding the Fourth Proportional to 776,971.86, 1,165,457.79 and 278,685.78

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Solution

The fourth proportional to 776,971.86, 1,165,457.79 and 278,685.78 is: 418,028.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,971.86 : 1,165,457.79 = 278,685.78 : x
  2. Step 2: Convert to fraction form
    776,971.86/1,165,457.79 = 278,685.78/x
  3. Step 3: Cross multiply
    776,971.86x = 1,165,457.79 × 278,685.78
  4. Step 4: Simplify right side
    776,971.86x = 324,796,513,263.23
  5. Step 5: Solve for x
    x = 324,796,513,263.23/776,971.86
  6. Step 6: Final answer
    x = 418,028.67

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.