Home / 810,840.78-1,118,991.78-538,438.95

Finding the Fourth Proportional to 810,840.78, 1,118,991.78 and 538,438.95

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Solution

The fourth proportional to 810,840.78, 1,118,991.78 and 538,438.95 is: 743,066.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,840.78 : 1,118,991.78 = 538,438.95 : x
  2. Step 2: Convert to fraction form
    810,840.78/1,118,991.78 = 538,438.95/x
  3. Step 3: Cross multiply
    810,840.78x = 1,118,991.78 × 538,438.95
  4. Step 4: Simplify right side
    810,840.78x = 602,508,759,081.83
  5. Step 5: Solve for x
    x = 602,508,759,081.83/810,840.78
  6. Step 6: Final answer
    x = 743,066.67

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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.