Home / 520,072,903.60-717,700,433.79-285,118,519.39

Finding the Fourth Proportional to 520,072,903.60, 717,700,433.79 and 285,118,519.39

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Solution

The fourth proportional to 520,072,903.60, 717,700,433.79 and 285,118,519.39 is: 393,463,461.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,072,903.60 : 717,700,433.79 = 285,118,519.39 : x
  2. Step 2: Convert to fraction form
    520,072,903.60/717,700,433.79 = 285,118,519.39/x
  3. Step 3: Cross multiply
    520,072,903.60x = 717,700,433.79 × 285,118,519.39
  4. Step 4: Simplify right side
    520,072,903.60x = 204,629,685,047,765,504
  5. Step 5: Solve for x
    x = 204,629,685,047,765,504/520,072,903.60
  6. Step 6: Final answer
    x = 393,463,461.82

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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.