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Finding the Fourth Proportional to 7,208,654.91, 9,946,873.69 and 4,378,228.59

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Solution

The fourth proportional to 7,208,654.91, 9,946,873.69 and 4,378,228.59 is: 6,041,305.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,208,654.91 : 9,946,873.69 = 4,378,228.59 : x
  2. Step 2: Convert to fraction form
    7,208,654.91/9,946,873.69 = 4,378,228.59/x
  3. Step 3: Cross multiply
    7,208,654.91x = 9,946,873.69 × 4,378,228.59
  4. Step 4: Simplify right side
    7,208,654.91x = 43,549,686,801,016.77
  5. Step 5: Solve for x
    x = 43,549,686,801,016.77/7,208,654.91
  6. Step 6: Final answer
    x = 6,041,305.53

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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.