Home / 909,660,661.98-1,255,331,715.51-491,972,947.26

Finding the Fourth Proportional to 909,660,661.98, 1,255,331,715.51 and 491,972,947.26

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Solution

The fourth proportional to 909,660,661.98, 1,255,331,715.51 and 491,972,947.26 is: 678,922,668.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,660,661.98 : 1,255,331,715.51 = 491,972,947.26 : x
  2. Step 2: Convert to fraction form
    909,660,661.98/1,255,331,715.51 = 491,972,947.26/x
  3. Step 3: Cross multiply
    909,660,661.98x = 1,255,331,715.51 × 491,972,947.26
  4. Step 4: Simplify right side
    909,660,661.98x = 617,589,243,868,406,528
  5. Step 5: Solve for x
    x = 617,589,243,868,406,528/909,660,661.98
  6. Step 6: Final answer
    x = 678,922,668.29

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Double scale
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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.