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Finding the Fourth Proportional to 3,315,873.93, 4,973,810.47 and 919,718.55

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Solution

The fourth proportional to 3,315,873.93, 4,973,810.47 and 919,718.55 is: 1,379,577.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315,873.93 : 4,973,810.47 = 919,718.55 : x
  2. Step 2: Convert to fraction form
    3,315,873.93/4,973,810.47 = 919,718.55/x
  3. Step 3: Cross multiply
    3,315,873.93x = 4,973,810.47 × 919,718.55
  4. Step 4: Simplify right side
    3,315,873.93x = 4,574,505,748,844.63
  5. Step 5: Solve for x
    x = 4,574,505,748,844.63/3,315,873.93
  6. Step 6: Final answer
    x = 1,379,577.71

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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.