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Finding the Fourth Proportional to 3,315,741.75, 4,973,612.36 and 919,586.35

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Solution

The fourth proportional to 3,315,741.75, 4,973,612.36 and 919,586.35 is: 1,379,379.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315,741.75 : 4,973,612.36 = 919,586.35 : x
  2. Step 2: Convert to fraction form
    3,315,741.75/4,973,612.36 = 919,586.35/x
  3. Step 3: Cross multiply
    3,315,741.75x = 4,973,612.36 × 919,586.35
  4. Step 4: Simplify right side
    3,315,741.75x = 4,573,666,038,066.37
  5. Step 5: Solve for x
    x = 4,573,666,038,066.37/3,315,741.75
  6. Step 6: Final answer
    x = 1,379,379.45

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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.