Home / 691,724,429.10-954,578,593.71-378,459,905.58

Finding the Fourth Proportional to 691,724,429.10, 954,578,593.71 and 378,459,905.58

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Solution

The fourth proportional to 691,724,429.10, 954,578,593.71 and 378,459,905.58 is: 522,274,057.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,724,429.10 : 954,578,593.71 = 378,459,905.58 : x
  2. Step 2: Convert to fraction form
    691,724,429.10/954,578,593.71 = 378,459,905.58/x
  3. Step 3: Cross multiply
    691,724,429.10x = 954,578,593.71 × 378,459,905.58
  4. Step 4: Simplify right side
    691,724,429.10x = 361,269,724,444,175,808
  5. Step 5: Solve for x
    x = 361,269,724,444,175,808/691,724,429.10
  6. Step 6: Final answer
    x = 522,274,057.77

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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.