Home / 772,522,006.88-1,066,087,960.62-420,105,655.76

Finding the Fourth Proportional to 772,522,006.88, 1,066,087,960.62 and 420,105,655.76

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Solution

The fourth proportional to 772,522,006.88, 1,066,087,960.62 and 420,105,655.76 is: 579,749,933.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,522,006.88 : 1,066,087,960.62 = 420,105,655.76 : x
  2. Step 2: Convert to fraction form
    772,522,006.88/1,066,087,960.62 = 420,105,655.76/x
  3. Step 3: Cross multiply
    772,522,006.88x = 1,066,087,960.62 × 420,105,655.76
  4. Step 4: Simplify right side
    772,522,006.88x = 447,869,581,794,106,176
  5. Step 5: Solve for x
    x = 447,869,581,794,106,176/772,522,006.88
  6. Step 6: Final answer
    x = 579,749,933.08

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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.