Home / 405,981,511.48-560,255,038.86-220,342,529.56

Finding the Fourth Proportional to 405,981,511.48, 560,255,038.86 and 220,342,529.56

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Solution

The fourth proportional to 405,981,511.48, 560,255,038.86 and 220,342,529.56 is: 304,072,990.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,981,511.48 : 560,255,038.86 = 220,342,529.56 : x
  2. Step 2: Convert to fraction form
    405,981,511.48/560,255,038.86 = 220,342,529.56/x
  3. Step 3: Cross multiply
    405,981,511.48x = 560,255,038.86 × 220,342,529.56
  4. Step 4: Simplify right side
    405,981,511.48x = 123,448,012,461,148,496
  5. Step 5: Solve for x
    x = 123,448,012,461,148,496/405,981,511.48
  6. Step 6: Final answer
    x = 304,072,990.94

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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.