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Finding the Fourth Proportional to 687,992,499.45, 965,910,477.15 and 687,992,499.45

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Solution

The fourth proportional to 687,992,499.45, 965,910,477.15 and 687,992,499.45 is: 965,910,477.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,992,499.45 : 965,910,477.15 = 687,992,499.45 : x
  2. Step 2: Convert to fraction form
    687,992,499.45/965,910,477.15 = 687,992,499.45/x
  3. Step 3: Cross multiply
    687,992,499.45x = 965,910,477.15 × 687,992,499.45
  4. Step 4: Simplify right side
    687,992,499.45x = 664,539,163,419,370,624
  5. Step 5: Solve for x
    x = 664,539,163,419,370,624/687,992,499.45
  6. Step 6: Final answer
    x = 965,910,477.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.