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Finding the Fourth Proportional to 879,994.50, 1,214,392.41 and 477,586.50

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Solution

The fourth proportional to 879,994.50, 1,214,392.41 and 477,586.50 is: 659,069.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,994.50 : 1,214,392.41 = 477,586.50 : x
  2. Step 2: Convert to fraction form
    879,994.50/1,214,392.41 = 477,586.50/x
  3. Step 3: Cross multiply
    879,994.50x = 1,214,392.41 × 477,586.50
  4. Step 4: Simplify right side
    879,994.50x = 579,977,420,718.47
  5. Step 5: Solve for x
    x = 579,977,420,718.47/879,994.50
  6. Step 6: Final answer
    x = 659,069.37

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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.