Home / 472,392,474.30-708,588,711.45-290,742,003.90

Finding the Fourth Proportional to 472,392,474.30, 708,588,711.45 and 290,742,003.90

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Solution

The fourth proportional to 472,392,474.30, 708,588,711.45 and 290,742,003.90 is: 436,113,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,474.30 : 708,588,711.45 = 290,742,003.90 : x
  2. Step 2: Convert to fraction form
    472,392,474.30/708,588,711.45 = 290,742,003.90/x
  3. Step 3: Cross multiply
    472,392,474.30x = 708,588,711.45 × 290,742,003.90
  4. Step 4: Simplify right side
    472,392,474.30x = 206,016,501,907,891,872
  5. Step 5: Solve for x
    x = 206,016,501,907,891,872/472,392,474.30
  6. Step 6: Final answer
    x = 436,113,005.85

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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.