Home / 1,390,874,661.20-2,086,563,934.20-699,040,830.80

Finding the Fourth Proportional to 1,390,874,661.20, 2,086,563,934.20 and 699,040,830.80

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Solution

The fourth proportional to 1,390,874,661.20, 2,086,563,934.20 and 699,040,830.80 is: 1,048,687,870.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,874,661.20 : 2,086,563,934.20 = 699,040,830.80 : x
  2. Step 2: Convert to fraction form
    1,390,874,661.20/2,086,563,934.20 = 699,040,830.80/x
  3. Step 3: Cross multiply
    1,390,874,661.20x = 2,086,563,934.20 × 699,040,830.80
  4. Step 4: Simplify right side
    1,390,874,661.20x = 1,458,593,386,080,484,352
  5. Step 5: Solve for x
    x = 1,458,593,386,080,484,352/1,390,874,661.20
  6. Step 6: Final answer
    x = 1,048,687,870.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.