Home / 638,479,803.06-881,101,738.50-345,124,371.06

Finding the Fourth Proportional to 638,479,803.06, 881,101,738.50 and 345,124,371.06

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Solution

The fourth proportional to 638,479,803.06, 881,101,738.50 and 345,124,371.06 is: 476,271,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,479,803.06 : 881,101,738.50 = 345,124,371.06 : x
  2. Step 2: Convert to fraction form
    638,479,803.06/881,101,738.50 = 345,124,371.06/x
  3. Step 3: Cross multiply
    638,479,803.06x = 881,101,738.50 × 345,124,371.06
  4. Step 4: Simplify right side
    638,479,803.06x = 304,089,683,339,685,120
  5. Step 5: Solve for x
    x = 304,089,683,339,685,120/638,479,803.06
  6. Step 6: Final answer
    x = 476,271,421.40

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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.