Home / 915,131,439,872.96-1,373,006,079,373-405,119,855,756.48

Finding the Fourth Proportional to 915,131,439,872.96, 1,373,006,079,373 and 405,119,855,756.48

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Solution

The fourth proportional to 915,131,439,872.96, 1,373,006,079,373 and 405,119,855,756.48 is: 607,816,539,343.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,131,439,872.96 : 1,373,006,079,373 = 405,119,855,756.48 : x
  2. Step 2: Convert to fraction form
    915,131,439,872.96/1,373,006,079,373 = 405,119,855,756.48/x
  3. Step 3: Cross multiply
    915,131,439,872.96x = 1,373,006,079,373 × 405,119,855,756.48
  4. Step 4: Simplify right side
    915,131,439,872.96x = 556,232,024,828,359,861,075,968
  5. Step 5: Solve for x
    x = 556,232,024,828,359,861,075,968/915,131,439,872.96
  6. Step 6: Final answer
    x = 607,816,539,343.88

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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.