Home / 777,729,678.72-1,073,350,131.32-476,514,890.55

Finding the Fourth Proportional to 777,729,678.72, 1,073,350,131.32 and 476,514,890.55

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Solution

The fourth proportional to 777,729,678.72, 1,073,350,131.32 and 476,514,890.55 is: 657,641,510.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,729,678.72 : 1,073,350,131.32 = 476,514,890.55 : x
  2. Step 2: Convert to fraction form
    777,729,678.72/1,073,350,131.32 = 476,514,890.55/x
  3. Step 3: Cross multiply
    777,729,678.72x = 1,073,350,131.32 × 476,514,890.55
  4. Step 4: Simplify right side
    777,729,678.72x = 511,467,320,347,777,984
  5. Step 5: Solve for x
    x = 511,467,320,347,777,984/777,729,678.72
  6. Step 6: Final answer
    x = 657,641,510.08

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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.