Home / 1,388,049,155.24-2,082,418,339.12-688,869,432.42

Finding the Fourth Proportional to 1,388,049,155.24, 2,082,418,339.12 and 688,869,432.42

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Solution

The fourth proportional to 1,388,049,155.24, 2,082,418,339.12 and 688,869,432.42 is: 1,033,475,171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,049,155.24 : 2,082,418,339.12 = 688,869,432.42 : x
  2. Step 2: Convert to fraction form
    1,388,049,155.24/2,082,418,339.12 = 688,869,432.42/x
  3. Step 3: Cross multiply
    1,388,049,155.24x = 2,082,418,339.12 × 688,869,432.42
  4. Step 4: Simplify right side
    1,388,049,155.24x = 1,434,514,339,330,593,280
  5. Step 5: Solve for x
    x = 1,434,514,339,330,593,280/1,388,049,155.24
  6. Step 6: Final answer
    x = 1,033,475,171.91

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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.