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Finding the Fourth Proportional to 3,315,914.04, 4,973,870.75 and 919,758.78

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Solution

The fourth proportional to 3,315,914.04, 4,973,870.75 and 919,758.78 is: 1,379,638.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315,914.04 : 4,973,870.75 = 919,758.78 : x
  2. Step 2: Convert to fraction form
    3,315,914.04/4,973,870.75 = 919,758.78/x
  3. Step 3: Cross multiply
    3,315,914.04x = 4,973,870.75 × 919,758.78
  4. Step 4: Simplify right side
    3,315,914.04x = 4,574,761,288,298.89
  5. Step 5: Solve for x
    x = 4,574,761,288,298.89/3,315,914.04
  6. Step 6: Final answer
    x = 1,379,638.08

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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.