Home / 389,583,141-537,641,634.42-215,742,885

Finding the Fourth Proportional to 389,583,141, 537,641,634.42 and 215,742,885

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Solution

The fourth proportional to 389,583,141, 537,641,634.42 and 215,742,885 is: 297,734,540.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,583,141 : 537,641,634.42 = 215,742,885 : x
  2. Step 2: Convert to fraction form
    389,583,141/537,641,634.42 = 215,742,885/x
  3. Step 3: Cross multiply
    389,583,141x = 537,641,634.42 × 215,742,885
  4. Step 4: Simplify right side
    389,583,141x = 115,992,357,305,886,096
  5. Step 5: Solve for x
    x = 115,992,357,305,886,096/389,583,141
  6. Step 6: Final answer
    x = 297,734,540.07

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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.