Home / 426,082,776.45-638,559,169.16-218,812,813.89

Finding the Fourth Proportional to 426,082,776.45, 638,559,169.16 and 218,812,813.89

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Solution

The fourth proportional to 426,082,776.45, 638,559,169.16 and 218,812,813.89 is: 327,929,070.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,082,776.45 : 638,559,169.16 = 218,812,813.89 : x
  2. Step 2: Convert to fraction form
    426,082,776.45/638,559,169.16 = 218,812,813.89/x
  3. Step 3: Cross multiply
    426,082,776.45x = 638,559,169.16 × 218,812,813.89
  4. Step 4: Simplify right side
    426,082,776.45x = 139,724,928,638,066,032
  5. Step 5: Solve for x
    x = 139,724,928,638,066,032/426,082,776.45
  6. Step 6: Final answer
    x = 327,929,070.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.