Home / 509,212,219.97-702,719,189.07-308,266,433.59

Finding the Fourth Proportional to 509,212,219.97, 702,719,189.07 and 308,266,433.59

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Solution

The fourth proportional to 509,212,219.97, 702,719,189.07 and 308,266,433.59 is: 425,411,507.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,212,219.97 : 702,719,189.07 = 308,266,433.59 : x
  2. Step 2: Convert to fraction form
    509,212,219.97/702,719,189.07 = 308,266,433.59/x
  3. Step 3: Cross multiply
    509,212,219.97x = 702,719,189.07 × 308,266,433.59
  4. Step 4: Simplify right side
    509,212,219.97x = 216,624,738,229,865,792
  5. Step 5: Solve for x
    x = 216,624,738,229,865,792/509,212,219.97
  6. Step 6: Final answer
    x = 425,411,507.69

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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.