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Finding the Fourth Proportional to 871,896.64, 1,203,804.51 and 779,729.95

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Solution

The fourth proportional to 871,896.64, 1,203,804.51 and 779,729.95 is: 1,076,552.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,896.64 : 1,203,804.51 = 779,729.95 : x
  2. Step 2: Convert to fraction form
    871,896.64/1,203,804.51 = 779,729.95/x
  3. Step 3: Cross multiply
    871,896.64x = 1,203,804.51 × 779,729.95
  4. Step 4: Simplify right side
    871,896.64x = 938,642,430,392.08
  5. Step 5: Solve for x
    x = 938,642,430,392.08/871,896.64
  6. Step 6: Final answer
    x = 1,076,552.41

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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.