Home / 890,140,488.82-1,228,467,412.55-493,791,266.14

Finding the Fourth Proportional to 890,140,488.82, 1,228,467,412.55 and 493,791,266.14

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Solution

The fourth proportional to 890,140,488.82, 1,228,467,412.55 and 493,791,266.14 is: 681,472,741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,140,488.82 : 1,228,467,412.55 = 493,791,266.14 : x
  2. Step 2: Convert to fraction form
    890,140,488.82/1,228,467,412.55 = 493,791,266.14/x
  3. Step 3: Cross multiply
    890,140,488.82x = 1,228,467,412.55 × 493,791,266.14
  4. Step 4: Simplify right side
    890,140,488.82x = 606,606,479,052,957,568
  5. Step 5: Solve for x
    x = 606,606,479,052,957,568/890,140,488.82
  6. Step 6: Final answer
    x = 681,472,741.30

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1.5x scale

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.