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Finding the Fourth Proportional to 664,075.44, 916,309.67 and 373,646.70

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Solution

The fourth proportional to 664,075.44, 916,309.67 and 373,646.70 is: 515,568.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,075.44 : 916,309.67 = 373,646.70 : x
  2. Step 2: Convert to fraction form
    664,075.44/916,309.67 = 373,646.70/x
  3. Step 3: Cross multiply
    664,075.44x = 916,309.67 × 373,646.70
  4. Step 4: Simplify right side
    664,075.44x = 342,376,082,505.36
  5. Step 5: Solve for x
    x = 342,376,082,505.36/664,075.44
  6. Step 6: Final answer
    x = 515,568.05

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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.