Home / 1,438,239,077.28-2,157,421,404.72-455,738,021.88

Finding the Fourth Proportional to 1,438,239,077.28, 2,157,421,404.72 and 455,738,021.88

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Solution

The fourth proportional to 1,438,239,077.28, 2,157,421,404.72 and 455,738,021.88 is: 683,626,928.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,239,077.28 : 2,157,421,404.72 = 455,738,021.88 : x
  2. Step 2: Convert to fraction form
    1,438,239,077.28/2,157,421,404.72 = 455,738,021.88/x
  3. Step 3: Cross multiply
    1,438,239,077.28x = 2,157,421,404.72 × 455,738,021.88
  4. Step 4: Simplify right side
    1,438,239,077.28x = 983,218,963,348,663,552
  5. Step 5: Solve for x
    x = 983,218,963,348,663,552/1,438,239,077.28
  6. Step 6: Final answer
    x = 683,626,928.85

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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.