Home / 538,302,422.40-742,858,004.12-290,783,776.65

Finding the Fourth Proportional to 538,302,422.40, 742,858,004.12 and 290,783,776.65

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Solution

The fourth proportional to 538,302,422.40, 742,858,004.12 and 290,783,776.65 is: 401,281,968.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,302,422.40 : 742,858,004.12 = 290,783,776.65 : x
  2. Step 2: Convert to fraction form
    538,302,422.40/742,858,004.12 = 290,783,776.65/x
  3. Step 3: Cross multiply
    538,302,422.40x = 742,858,004.12 × 290,783,776.65
  4. Step 4: Simplify right side
    538,302,422.40x = 216,011,055,951,240,928
  5. Step 5: Solve for x
    x = 216,011,055,951,240,928/538,302,422.40
  6. Step 6: Final answer
    x = 401,281,968.95

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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.