Home / 538,302,461.40-742,858,057.94-290,783,815.65

Finding the Fourth Proportional to 538,302,461.40, 742,858,057.94 and 290,783,815.65

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Solution

The fourth proportional to 538,302,461.40, 742,858,057.94 and 290,783,815.65 is: 401,282,022.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,302,461.40 : 742,858,057.94 = 290,783,815.65 : x
  2. Step 2: Convert to fraction form
    538,302,461.40/742,858,057.94 = 290,783,815.65/x
  3. Step 3: Cross multiply
    538,302,461.40x = 742,858,057.94 × 290,783,815.65
  4. Step 4: Simplify right side
    538,302,461.40x = 216,011,100,572,688,032
  5. Step 5: Solve for x
    x = 216,011,100,572,688,032/538,302,461.40
  6. Step 6: Final answer
    x = 401,282,022.77

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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.