Home / 686,198,708.10-946,961,556.75-372,932,937.45

Finding the Fourth Proportional to 686,198,708.10, 946,961,556.75 and 372,932,937.45

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Solution

The fourth proportional to 686,198,708.10, 946,961,556.75 and 372,932,937.45 is: 514,651,442.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,198,708.10 : 946,961,556.75 = 372,932,937.45 : x
  2. Step 2: Convert to fraction form
    686,198,708.10/946,961,556.75 = 372,932,937.45/x
  3. Step 3: Cross multiply
    686,198,708.10x = 946,961,556.75 × 372,932,937.45
  4. Step 4: Simplify right side
    686,198,708.10x = 353,153,155,011,002,368
  5. Step 5: Solve for x
    x = 353,153,155,011,002,368/686,198,708.10
  6. Step 6: Final answer
    x = 514,651,442.57

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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.