Home / 909,088,694.96-1,254,541,858.44-491,400,986.72

Finding the Fourth Proportional to 909,088,694.96, 1,254,541,858.44 and 491,400,986.72

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Solution

The fourth proportional to 909,088,694.96, 1,254,541,858.44 and 491,400,986.72 is: 678,133,069.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,088,694.96 : 1,254,541,858.44 = 491,400,986.72 : x
  2. Step 2: Convert to fraction form
    909,088,694.96/1,254,541,858.44 = 491,400,986.72/x
  3. Step 3: Cross multiply
    909,088,694.96x = 1,254,541,858.44 × 491,400,986.72
  4. Step 4: Simplify right side
    909,088,694.96x = 616,483,107,118,958,592
  5. Step 5: Solve for x
    x = 616,483,107,118,958,592/909,088,694.96
  6. Step 6: Final answer
    x = 678,133,069.45

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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.