Home / 667,734,782.31-921,471,047.72-381,621,535.23

Finding the Fourth Proportional to 667,734,782.31, 921,471,047.72 and 381,621,535.23

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Solution

The fourth proportional to 667,734,782.31, 921,471,047.72 and 381,621,535.23 is: 526,636,031.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,734,782.31 : 921,471,047.72 = 381,621,535.23 : x
  2. Step 2: Convert to fraction form
    667,734,782.31/921,471,047.72 = 381,621,535.23/x
  3. Step 3: Cross multiply
    667,734,782.31x = 921,471,047.72 × 381,621,535.23
  4. Step 4: Simplify right side
    667,734,782.31x = 351,653,195,900,852,928
  5. Step 5: Solve for x
    x = 351,653,195,900,852,928/667,734,782.31
  6. Step 6: Final answer
    x = 526,636,031.57

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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.