Home / 640,237,541.53-882,658,920.26-449,239,051.28

Finding the Fourth Proportional to 640,237,541.53, 882,658,920.26 and 449,239,051.28

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Solution

The fourth proportional to 640,237,541.53, 882,658,920.26 and 449,239,051.28 is: 619,340,213.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,237,541.53 : 882,658,920.26 = 449,239,051.28 : x
  2. Step 2: Convert to fraction form
    640,237,541.53/882,658,920.26 = 449,239,051.28/x
  3. Step 3: Cross multiply
    640,237,541.53x = 882,658,920.26 × 449,239,051.28
  4. Step 4: Simplify right side
    640,237,541.53x = 396,524,855,937,249,408
  5. Step 5: Solve for x
    x = 396,524,855,937,249,408/640,237,541.53
  6. Step 6: Final answer
    x = 619,340,213.93

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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.