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Finding the Fourth Proportional to 518,752,899.66, 778,128,390.09 and 168,998,550.06

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Solution

The fourth proportional to 518,752,899.66, 778,128,390.09 and 168,998,550.06 is: 253,497,512.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,752,899.66 : 778,128,390.09 = 168,998,550.06 : x
  2. Step 2: Convert to fraction form
    518,752,899.66/778,128,390.09 = 168,998,550.06/x
  3. Step 3: Cross multiply
    518,752,899.66x = 778,128,390.09 × 168,998,550.06
  4. Step 4: Simplify right side
    518,752,899.66x = 131,502,569,685,732,080
  5. Step 5: Solve for x
    x = 131,502,569,685,732,080/518,752,899.66
  6. Step 6: Final answer
    x = 253,497,512.54

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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.