Home / 877,818,658.35-1,210,217,889.50-697,364,378.67

Finding the Fourth Proportional to 877,818,658.35, 1,210,217,889.50 and 697,364,378.67

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Solution

The fourth proportional to 877,818,658.35, 1,210,217,889.50 and 697,364,378.67 is: 961,431,884.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,818,658.35 : 1,210,217,889.50 = 697,364,378.67 : x
  2. Step 2: Convert to fraction form
    877,818,658.35/1,210,217,889.50 = 697,364,378.67/x
  3. Step 3: Cross multiply
    877,818,658.35x = 1,210,217,889.50 × 697,364,378.67
  4. Step 4: Simplify right side
    877,818,658.35x = 843,962,846,570,117,888
  5. Step 5: Solve for x
    x = 843,962,846,570,117,888/877,818,658.35
  6. Step 6: Final answer
    x = 961,431,884.07

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1.5x scale

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.