Home / 1,292,912,406.46-1,939,368,635.07-310,338,945.64

Finding the Fourth Proportional to 1,292,912,406.46, 1,939,368,635.07 and 310,338,945.64

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Solution

The fourth proportional to 1,292,912,406.46, 1,939,368,635.07 and 310,338,945.64 is: 465,508,424.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,912,406.46 : 1,939,368,635.07 = 310,338,945.64 : x
  2. Step 2: Convert to fraction form
    1,292,912,406.46/1,939,368,635.07 = 310,338,945.64/x
  3. Step 3: Cross multiply
    1,292,912,406.46x = 1,939,368,635.07 × 310,338,945.64
  4. Step 4: Simplify right side
    1,292,912,406.46x = 601,861,617,414,909,696
  5. Step 5: Solve for x
    x = 601,861,617,414,909,696/1,292,912,406.46
  6. Step 6: Final answer
    x = 465,508,424.55

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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.