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Finding the Fourth Proportional to 1,913,170.93, 2,869,921.64 and 493,215.01

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Solution

The fourth proportional to 1,913,170.93, 2,869,921.64 and 493,215.01 is: 739,865.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,170.93 : 2,869,921.64 = 493,215.01 : x
  2. Step 2: Convert to fraction form
    1,913,170.93/2,869,921.64 = 493,215.01/x
  3. Step 3: Cross multiply
    1,913,170.93x = 2,869,921.64 × 493,215.01
  4. Step 4: Simplify right side
    1,913,170.93x = 1,415,488,427,905.74
  5. Step 5: Solve for x
    x = 1,415,488,427,905.74/1,913,170.93
  6. Step 6: Final answer
    x = 739,865.11

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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.