Home / 915,131,365.68-1,371,548,151.80-494,935,987.56

Finding the Fourth Proportional to 915,131,365.68, 1,371,548,151.80 and 494,935,987.56

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Solution

The fourth proportional to 915,131,365.68, 1,371,548,151.80 and 494,935,987.56 is: 741,782,616.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,131,365.68 : 1,371,548,151.80 = 494,935,987.56 : x
  2. Step 2: Convert to fraction form
    915,131,365.68/1,371,548,151.80 = 494,935,987.56/x
  3. Step 3: Cross multiply
    915,131,365.68x = 1,371,548,151.80 × 494,935,987.56
  4. Step 4: Simplify right side
    915,131,365.68x = 678,828,538,997,225,728
  5. Step 5: Solve for x
    x = 678,828,538,997,225,728/915,131,365.68
  6. Step 6: Final answer
    x = 741,782,616.63

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1.5x scale

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.