Home / 1,991,605,438-2,749,655,865.68-1,267,801,760.15

Finding the Fourth Proportional to 1,991,605,438, 2,749,655,865.68 and 1,267,801,760.15

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Solution

The fourth proportional to 1,991,605,438, 2,749,655,865.68 and 1,267,801,760.15 is: 1,750,356,009.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,605,438 : 2,749,655,865.68 = 1,267,801,760.15 : x
  2. Step 2: Convert to fraction form
    1,991,605,438/2,749,655,865.68 = 1,267,801,760.15/x
  3. Step 3: Cross multiply
    1,991,605,438x = 2,749,655,865.68 × 1,267,801,760.15
  4. Step 4: Simplify right side
    1,991,605,438x = 3,486,018,546,315,875,840
  5. Step 5: Solve for x
    x = 3,486,018,546,315,875,840/1,991,605,438
  6. Step 6: Final answer
    x = 1,750,356,009.18

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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.