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Finding the Fourth Proportional to 664,017.60, 996,544.80 and 309,075.60

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Solution

The fourth proportional to 664,017.60, 996,544.80 and 309,075.60 is: 463,854.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,017.60 : 996,544.80 = 309,075.60 : x
  2. Step 2: Convert to fraction form
    664,017.60/996,544.80 = 309,075.60/x
  3. Step 3: Cross multiply
    664,017.60x = 996,544.80 × 309,075.60
  4. Step 4: Simplify right side
    664,017.60x = 308,007,681,986.88
  5. Step 5: Solve for x
    x = 308,007,681,986.88/664,017.60
  6. Step 6: Final answer
    x = 463,854.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.