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Finding the Fourth Proportional to 1,913,213.85, 2,869,985.97 and 493,257.93

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Solution

The fourth proportional to 1,913,213.85, 2,869,985.97 and 493,257.93 is: 739,929.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,213.85 : 2,869,985.97 = 493,257.93 : x
  2. Step 2: Convert to fraction form
    1,913,213.85/2,869,985.97 = 493,257.93/x
  3. Step 3: Cross multiply
    1,913,213.85x = 2,869,985.97 × 493,257.93
  4. Step 4: Simplify right side
    1,913,213.85x = 1,415,643,338,691.24
  5. Step 5: Solve for x
    x = 1,415,643,338,691.24/1,913,213.85
  6. Step 6: Final answer
    x = 739,929.48

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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.