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Finding the Fourth Proportional to 702,942,455.54, 970,060,567.65 and 389,675,875.70

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Solution

The fourth proportional to 702,942,455.54, 970,060,567.65 and 389,675,875.70 is: 537,752,696.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,942,455.54 : 970,060,567.65 = 389,675,875.70 : x
  2. Step 2: Convert to fraction form
    702,942,455.54/970,060,567.65 = 389,675,875.70/x
  3. Step 3: Cross multiply
    702,942,455.54x = 970,060,567.65 × 389,675,875.70
  4. Step 4: Simplify right side
    702,942,455.54x = 378,009,201,181,052,800
  5. Step 5: Solve for x
    x = 378,009,201,181,052,800/702,942,455.54
  6. Step 6: Final answer
    x = 537,752,696.83

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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.