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Finding the Fourth Proportional to 18,870,228, 28,305,342 and 5,407,056

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Solution

The fourth proportional to 18,870,228, 28,305,342 and 5,407,056 is: 8,110,584

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870,228 : 28,305,342 = 5,407,056 : x
  2. Step 2: Convert to fraction form
    18,870,228/28,305,342 = 5,407,056/x
  3. Step 3: Cross multiply
    18,870,228x = 28,305,342 × 5,407,056
  4. Step 4: Simplify right side
    18,870,228x = 153,048,569,293,152
  5. Step 5: Solve for x
    x = 153,048,569,293,152/18,870,228
  6. Step 6: Final answer
    x = 8,110,584

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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.