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Finding the Fourth Proportional to 702,776.36, 969,831.80 and 380,486.56

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Solution

The fourth proportional to 702,776.36, 969,831.80 and 380,486.56 is: 525,071.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,776.36 : 969,831.80 = 380,486.56 : x
  2. Step 2: Convert to fraction form
    702,776.36/969,831.80 = 380,486.56/x
  3. Step 3: Cross multiply
    702,776.36x = 969,831.80 × 380,486.56
  4. Step 4: Simplify right side
    702,776.36x = 369,007,965,360.61
  5. Step 5: Solve for x
    x = 369,007,965,360.61/702,776.36
  6. Step 6: Final answer
    x = 525,071.68

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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.