Home / 1,292,912,120.33-1,939,368,206.16-310,338,659.78

Finding the Fourth Proportional to 1,292,912,120.33, 1,939,368,206.16 and 310,338,659.78

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Solution

The fourth proportional to 1,292,912,120.33, 1,939,368,206.16 and 310,338,659.78 is: 465,507,995.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,912,120.33 : 1,939,368,206.16 = 310,338,659.78 : x
  2. Step 2: Convert to fraction form
    1,292,912,120.33/1,939,368,206.16 = 310,338,659.78/x
  3. Step 3: Cross multiply
    1,292,912,120.33x = 1,939,368,206.16 × 310,338,659.78
  4. Step 4: Simplify right side
    1,292,912,120.33x = 601,860,929,917,212,928
  5. Step 5: Solve for x
    x = 601,860,929,917,212,928/1,292,912,120.33
  6. Step 6: Final answer
    x = 465,507,995.83

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Double scale
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1.5x scale

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.