Home / 499,494,567.72-689,287,539.14-276,485,390.40

Finding the Fourth Proportional to 499,494,567.72, 689,287,539.14 and 276,485,390.40

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Solution

The fourth proportional to 499,494,567.72, 689,287,539.14 and 276,485,390.40 is: 381,541,555.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,494,567.72 : 689,287,539.14 = 276,485,390.40 : x
  2. Step 2: Convert to fraction form
    499,494,567.72/689,287,539.14 = 276,485,390.40/x
  3. Step 3: Cross multiply
    499,494,567.72x = 689,287,539.14 × 276,485,390.40
  4. Step 4: Simplify right side
    499,494,567.72x = 190,577,934,356,978,144
  5. Step 5: Solve for x
    x = 190,577,934,356,978,144/499,494,567.72
  6. Step 6: Final answer
    x = 381,541,555.55

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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.