Home / 685,143,347.87-945,472,502.42-371,870,835.79

Finding the Fourth Proportional to 685,143,347.87, 945,472,502.42 and 371,870,835.79

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Solution

The fourth proportional to 685,143,347.87, 945,472,502.42 and 371,870,835.79 is: 513,168,011.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,143,347.87 : 945,472,502.42 = 371,870,835.79 : x
  2. Step 2: Convert to fraction form
    685,143,347.87/945,472,502.42 = 371,870,835.79/x
  3. Step 3: Cross multiply
    685,143,347.87x = 945,472,502.42 × 371,870,835.79
  4. Step 4: Simplify right side
    685,143,347.87x = 351,593,649,687,165,184
  5. Step 5: Solve for x
    x = 351,593,649,687,165,184/685,143,347.87
  6. Step 6: Final answer
    x = 513,168,011.90

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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.