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Finding the Fourth Proportional to 4,978,565.91, 6,869,853.10 and 2,803,053.13

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Solution

The fourth proportional to 4,978,565.91, 6,869,853.10 and 2,803,053.13 is: 3,867,893.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978,565.91 : 6,869,853.10 = 2,803,053.13 : x
  2. Step 2: Convert to fraction form
    4,978,565.91/6,869,853.10 = 2,803,053.13/x
  3. Step 3: Cross multiply
    4,978,565.91x = 6,869,853.10 × 2,803,053.13
  4. Step 4: Simplify right side
    4,978,565.91x = 19,256,563,220,924.39
  5. Step 5: Solve for x
    x = 19,256,563,220,924.39/4,978,565.91
  6. Step 6: Final answer
    x = 3,867,893.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.