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Finding the Fourth Proportional to 780,877.35, 1,075,375.78 and 732,218.42

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Solution

The fourth proportional to 780,877.35, 1,075,375.78 and 732,218.42 is: 1,008,365.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,877.35 : 1,075,375.78 = 732,218.42 : x
  2. Step 2: Convert to fraction form
    780,877.35/1,075,375.78 = 732,218.42/x
  3. Step 3: Cross multiply
    780,877.35x = 1,075,375.78 × 732,218.42
  4. Step 4: Simplify right side
    780,877.35x = 787,409,954,537.87
  5. Step 5: Solve for x
    x = 787,409,954,537.87/780,877.35
  6. Step 6: Final answer
    x = 1,008,365.72

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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.