Home / 1,123,576,318.80-1,685,364,478.20-305,688,619.80

Finding the Fourth Proportional to 1,123,576,318.80, 1,685,364,478.20 and 305,688,619.80

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Solution

The fourth proportional to 1,123,576,318.80, 1,685,364,478.20 and 305,688,619.80 is: 458,532,929.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,576,318.80 : 1,685,364,478.20 = 305,688,619.80 : x
  2. Step 2: Convert to fraction form
    1,123,576,318.80/1,685,364,478.20 = 305,688,619.80/x
  3. Step 3: Cross multiply
    1,123,576,318.80x = 1,685,364,478.20 × 305,688,619.80
  4. Step 4: Simplify right side
    1,123,576,318.80x = 515,196,741,200,905,216
  5. Step 5: Solve for x
    x = 515,196,741,200,905,216/1,123,576,318.80
  6. Step 6: Final answer
    x = 458,532,929.70

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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.