Home / 509,212,218.70-702,719,187.32-308,266,432.32

Finding the Fourth Proportional to 509,212,218.70, 702,719,187.32 and 308,266,432.32

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Solution

The fourth proportional to 509,212,218.70, 702,719,187.32 and 308,266,432.32 is: 425,411,505.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,212,218.70 : 702,719,187.32 = 308,266,432.32 : x
  2. Step 2: Convert to fraction form
    509,212,218.70/702,719,187.32 = 308,266,432.32/x
  3. Step 3: Cross multiply
    509,212,218.70x = 702,719,187.32 × 308,266,432.32
  4. Step 4: Simplify right side
    509,212,218.70x = 216,624,736,801,352,064
  5. Step 5: Solve for x
    x = 216,624,736,801,352,064/509,212,218.70
  6. Step 6: Final answer
    x = 425,411,505.94

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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.