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Finding the Fourth Proportional to 646,692,562.67, 970,119,516.68 and 253,168,556.85

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Solution

The fourth proportional to 646,692,562.67, 970,119,516.68 and 253,168,556.85 is: 379,784,417.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,692,562.67 : 970,119,516.68 = 253,168,556.85 : x
  2. Step 2: Convert to fraction form
    646,692,562.67/970,119,516.68 = 253,168,556.85/x
  3. Step 3: Cross multiply
    646,692,562.67x = 970,119,516.68 × 253,168,556.85
  4. Step 4: Simplify right side
    646,692,562.67x = 245,603,758,009,895,072
  5. Step 5: Solve for x
    x = 245,603,758,009,895,072/646,692,562.67
  6. Step 6: Final answer
    x = 379,784,417.18

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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.