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Finding the Fourth Proportional to 687,998,440.95, 965,918,795.25 and 687,998,440.95

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Solution

The fourth proportional to 687,998,440.95, 965,918,795.25 and 687,998,440.95 is: 965,918,795.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,998,440.95 : 965,918,795.25 = 687,998,440.95 : x
  2. Step 2: Convert to fraction form
    687,998,440.95/965,918,795.25 = 687,998,440.95/x
  3. Step 3: Cross multiply
    687,998,440.95x = 965,918,795.25 × 687,998,440.95
  4. Step 4: Simplify right side
    687,998,440.95x = 664,550,625,216,302,336
  5. Step 5: Solve for x
    x = 664,550,625,216,302,336/687,998,440.95
  6. Step 6: Final answer
    x = 965,918,795.25

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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.