Home / 1,152,136,823.81-1,728,209,719.36-278,736,790.75

Finding the Fourth Proportional to 1,152,136,823.81, 1,728,209,719.36 and 278,736,790.75

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Solution

The fourth proportional to 1,152,136,823.81, 1,728,209,719.36 and 278,736,790.75 is: 418,106,270.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,136,823.81 : 1,728,209,719.36 = 278,736,790.75 : x
  2. Step 2: Convert to fraction form
    1,152,136,823.81/1,728,209,719.36 = 278,736,790.75/x
  3. Step 3: Cross multiply
    1,152,136,823.81x = 1,728,209,719.36 × 278,736,790.75
  4. Step 4: Simplify right side
    1,152,136,823.81x = 481,715,630,913,378,560
  5. Step 5: Solve for x
    x = 481,715,630,913,378,560/1,152,136,823.81
  6. Step 6: Final answer
    x = 418,106,270.85

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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.