Home / 1,385,226,112.86-1,911,642,979.59-790,498,756.62

Finding the Fourth Proportional to 1,385,226,112.86, 1,911,642,979.59 and 790,498,756.62

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Solution

The fourth proportional to 1,385,226,112.86, 1,911,642,979.59 and 790,498,756.62 is: 1,090,905,942.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,226,112.86 : 1,911,642,979.59 = 790,498,756.62 : x
  2. Step 2: Convert to fraction form
    1,385,226,112.86/1,911,642,979.59 = 790,498,756.62/x
  3. Step 3: Cross multiply
    1,385,226,112.86x = 1,911,642,979.59 × 790,498,756.62
  4. Step 4: Simplify right side
    1,385,226,112.86x = 1,511,151,398,467,247,104
  5. Step 5: Solve for x
    x = 1,511,151,398,467,247,104/1,385,226,112.86
  6. Step 6: Final answer
    x = 1,090,905,942.67

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Double scale
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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.