Home / 405,981,508.48-560,255,034.72-220,342,526.56

Finding the Fourth Proportional to 405,981,508.48, 560,255,034.72 and 220,342,526.56

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Solution

The fourth proportional to 405,981,508.48, 560,255,034.72 and 220,342,526.56 is: 304,072,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,981,508.48 : 560,255,034.72 = 220,342,526.56 : x
  2. Step 2: Convert to fraction form
    405,981,508.48/560,255,034.72 = 220,342,526.56/x
  3. Step 3: Cross multiply
    405,981,508.48x = 560,255,034.72 × 220,342,526.56
  4. Step 4: Simplify right side
    405,981,508.48x = 123,448,009,868,165,328
  5. Step 5: Solve for x
    x = 123,448,009,868,165,328/405,981,508.48
  6. Step 6: Final answer
    x = 304,072,986.80

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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.