Home / 678,736,039.17-1,018,097,553.26-402,188,185.17

Finding the Fourth Proportional to 678,736,039.17, 1,018,097,553.26 and 402,188,185.17

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Solution

The fourth proportional to 678,736,039.17, 1,018,097,553.26 and 402,188,185.17 is: 603,278,422.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,736,039.17 : 1,018,097,553.26 = 402,188,185.17 : x
  2. Step 2: Convert to fraction form
    678,736,039.17/1,018,097,553.26 = 402,188,185.17/x
  3. Step 3: Cross multiply
    678,736,039.17x = 1,018,097,553.26 × 402,188,185.17
  4. Step 4: Simplify right side
    678,736,039.17x = 409,466,807,269,645,888
  5. Step 5: Solve for x
    x = 409,466,807,269,645,888/678,736,039.17
  6. Step 6: Final answer
    x = 603,278,422.89

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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.