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Finding the Fourth Proportional to 488,792,970.40, 734,039,761.20 and 259,210,458.40

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Solution

The fourth proportional to 488,792,970.40, 734,039,761.20 and 259,210,458.40 is: 389,266,610.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,792,970.40 : 734,039,761.20 = 259,210,458.40 : x
  2. Step 2: Convert to fraction form
    488,792,970.40/734,039,761.20 = 259,210,458.40/x
  3. Step 3: Cross multiply
    488,792,970.40x = 734,039,761.20 × 259,210,458.40
  4. Step 4: Simplify right side
    488,792,970.40x = 190,270,782,984,478,560
  5. Step 5: Solve for x
    x = 190,270,782,984,478,560/488,792,970.40
  6. Step 6: Final answer
    x = 389,266,610.83

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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.