Home / 1,216,037,391.61-1,678,134,073.25-659,120,815.93

Finding the Fourth Proportional to 1,216,037,391.61, 1,678,134,073.25 and 659,120,815.93

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Solution

The fourth proportional to 1,216,037,391.61, 1,678,134,073.25 and 659,120,815.93 is: 909,588,066.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,037,391.61 : 1,678,134,073.25 = 659,120,815.93 : x
  2. Step 2: Convert to fraction form
    1,216,037,391.61/1,678,134,073.25 = 659,120,815.93/x
  3. Step 3: Cross multiply
    1,216,037,391.61x = 1,678,134,073.25 × 659,120,815.93
  4. Step 4: Simplify right side
    1,216,037,391.61x = 1,106,093,099,600,474,240
  5. Step 5: Solve for x
    x = 1,106,093,099,600,474,240/1,216,037,391.61
  6. Step 6: Final answer
    x = 909,588,066.31

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Double scale
Find fourth proportional to 1,216,037,392.61, 1,678,134,074.63 and 659,120,816.93
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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.