Home / 520,072,806.63-717,700,300.44-285,118,422.58

Finding the Fourth Proportional to 520,072,806.63, 717,700,300.44 and 285,118,422.58

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Solution

The fourth proportional to 520,072,806.63, 717,700,300.44 and 285,118,422.58 is: 393,463,328.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,072,806.63 : 717,700,300.44 = 285,118,422.58 : x
  2. Step 2: Convert to fraction form
    520,072,806.63/717,700,300.44 = 285,118,422.58/x
  3. Step 3: Cross multiply
    520,072,806.63x = 717,700,300.44 × 285,118,422.58
  4. Step 4: Simplify right side
    520,072,806.63x = 204,629,577,542,443,680
  5. Step 5: Solve for x
    x = 204,629,577,542,443,680/520,072,806.63
  6. Step 6: Final answer
    x = 393,463,328.47

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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.