Home / 520,072,901.41-717,700,430.77-285,118,517.20

Finding the Fourth Proportional to 520,072,901.41, 717,700,430.77 and 285,118,517.20

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Solution

The fourth proportional to 520,072,901.41, 717,700,430.77 and 285,118,517.20 is: 393,463,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,072,901.41 : 717,700,430.77 = 285,118,517.20 : x
  2. Step 2: Convert to fraction form
    520,072,901.41/717,700,430.77 = 285,118,517.20/x
  3. Step 3: Cross multiply
    520,072,901.41x = 717,700,430.77 × 285,118,517.20
  4. Step 4: Simplify right side
    520,072,901.41x = 204,629,682,617,094,304
  5. Step 5: Solve for x
    x = 204,629,682,617,094,304/520,072,901.41
  6. Step 6: Final answer
    x = 393,463,458.80

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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.