Home / 865,388,478.32-1,194,296,708.12-489,079,843.95

Finding the Fourth Proportional to 865,388,478.32, 1,194,296,708.12 and 489,079,843.95

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Solution

The fourth proportional to 865,388,478.32, 1,194,296,708.12 and 489,079,843.95 is: 674,964,437.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,388,478.32 : 1,194,296,708.12 = 489,079,843.95 : x
  2. Step 2: Convert to fraction form
    865,388,478.32/1,194,296,708.12 = 489,079,843.95/x
  3. Step 3: Cross multiply
    865,388,478.32x = 1,194,296,708.12 × 489,079,843.95
  4. Step 4: Simplify right side
    865,388,478.32x = 584,106,447,634,882,944
  5. Step 5: Solve for x
    x = 584,106,447,634,882,944/865,388,478.32
  6. Step 6: Final answer
    x = 674,964,437.67

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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.