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Finding the Fourth Proportional to 671,249,698.69, 926,345,495.26 and 385,193,608.83

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Solution

The fourth proportional to 671,249,698.69, 926,345,495.26 and 385,193,608.83 is: 531,579,179.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,249,698.69 : 926,345,495.26 = 385,193,608.83 : x
  2. Step 2: Convert to fraction form
    671,249,698.69/926,345,495.26 = 385,193,608.83/x
  3. Step 3: Cross multiply
    671,249,698.69x = 926,345,495.26 × 385,193,608.83
  4. Step 4: Simplify right side
    671,249,698.69x = 356,822,364,341,580,096
  5. Step 5: Solve for x
    x = 356,822,364,341,580,096/671,249,698.69
  6. Step 6: Final answer
    x = 531,579,179.90

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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.