Home / 718,715,515.63-991,837,048.41-405,448,760.83

Finding the Fourth Proportional to 718,715,515.63, 991,837,048.41 and 405,448,760.83

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Solution

The fourth proportional to 718,715,515.63, 991,837,048.41 and 405,448,760.83 is: 559,524,726.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,715,515.63 : 991,837,048.41 = 405,448,760.83 : x
  2. Step 2: Convert to fraction form
    718,715,515.63/991,837,048.41 = 405,448,760.83/x
  3. Step 3: Cross multiply
    718,715,515.63x = 991,837,048.41 × 405,448,760.83
  4. Step 4: Simplify right side
    718,715,515.63x = 402,139,102,224,178,176
  5. Step 5: Solve for x
    x = 402,139,102,224,178,176/718,715,515.63
  6. Step 6: Final answer
    x = 559,524,726.37

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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.