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Finding the Fourth Proportional to 707,994.60, 977,043.12 and 385,704.60

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Solution

The fourth proportional to 707,994.60, 977,043.12 and 385,704.60 is: 532,278.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,994.60 : 977,043.12 = 385,704.60 : x
  2. Step 2: Convert to fraction form
    707,994.60/977,043.12 = 385,704.60/x
  3. Step 3: Cross multiply
    707,994.60x = 977,043.12 × 385,704.60
  4. Step 4: Simplify right side
    707,994.60x = 376,850,025,782.35
  5. Step 5: Solve for x
    x = 376,850,025,782.35/707,994.60
  6. Step 6: Final answer
    x = 532,278.11

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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.