Home / 8,991,888.21-12,409,100.96-4,917,507.21

Finding the Fourth Proportional to 8,991,888.21, 12,409,100.96 and 4,917,507.21

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Solution

The fourth proportional to 8,991,888.21, 12,409,100.96 and 4,917,507.21 is: 6,786,321.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991,888.21 : 12,409,100.96 = 4,917,507.21 : x
  2. Step 2: Convert to fraction form
    8,991,888.21/12,409,100.96 = 4,917,507.21/x
  3. Step 3: Cross multiply
    8,991,888.21x = 12,409,100.96 × 4,917,507.21
  4. Step 4: Simplify right side
    8,991,888.21x = 61,021,843,415,830.38
  5. Step 5: Solve for x
    x = 61,021,843,415,830.38/8,991,888.21
  6. Step 6: Final answer
    x = 6,786,321.40

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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.