Home / 663,943,651.40-916,322,950.86-385,485,174.92

Finding the Fourth Proportional to 663,943,651.40, 916,322,950.86 and 385,485,174.92

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Solution

The fourth proportional to 663,943,651.40, 916,322,950.86 and 385,485,174.92 is: 532,016,402.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,943,651.40 : 916,322,950.86 = 385,485,174.92 : x
  2. Step 2: Convert to fraction form
    663,943,651.40/916,322,950.86 = 385,485,174.92/x
  3. Step 3: Cross multiply
    663,943,651.40x = 916,322,950.86 × 385,485,174.92
  4. Step 4: Simplify right side
    663,943,651.40x = 353,228,912,995,477,696
  5. Step 5: Solve for x
    x = 353,228,912,995,477,696/663,943,651.40
  6. Step 6: Final answer
    x = 532,016,402.67

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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.