Home / 520,072,808.17-717,700,302.55-285,118,424.11

Finding the Fourth Proportional to 520,072,808.17, 717,700,302.55 and 285,118,424.11

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Solution

The fourth proportional to 520,072,808.17, 717,700,302.55 and 285,118,424.11 is: 393,463,330.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,072,808.17 : 717,700,302.55 = 285,118,424.11 : x
  2. Step 2: Convert to fraction form
    520,072,808.17/717,700,302.55 = 285,118,424.11/x
  3. Step 3: Cross multiply
    520,072,808.17x = 717,700,302.55 × 285,118,424.11
  4. Step 4: Simplify right side
    520,072,808.17x = 204,629,579,242,737,728
  5. Step 5: Solve for x
    x = 204,629,579,242,737,728/520,072,808.17
  6. Step 6: Final answer
    x = 393,463,330.58

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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.