Home / 520,372,900.18-718,115,637.72-285,425,492.50

Finding the Fourth Proportional to 520,372,900.18, 718,115,637.72 and 285,425,492.50

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Solution

The fourth proportional to 520,372,900.18, 718,115,637.72 and 285,425,492.50 is: 393,887,747.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,372,900.18 : 718,115,637.72 = 285,425,492.50 : x
  2. Step 2: Convert to fraction form
    520,372,900.18/718,115,637.72 = 285,425,492.50/x
  3. Step 3: Cross multiply
    520,372,900.18x = 718,115,637.72 × 285,425,492.50
  4. Step 4: Simplify right side
    520,372,900.18x = 204,968,509,568,182,592
  5. Step 5: Solve for x
    x = 204,968,509,568,182,592/520,372,900.18
  6. Step 6: Final answer
    x = 393,887,747.61

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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.