Home / 1,382,910,721.13-1,907,210,713.37-980,227,984.72

Finding the Fourth Proportional to 1,382,910,721.13, 1,907,210,713.37 and 980,227,984.72

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Solution

The fourth proportional to 1,382,910,721.13, 1,907,210,713.37 and 980,227,984.72 is: 1,351,859,729.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,910,721.13 : 1,907,210,713.37 = 980,227,984.72 : x
  2. Step 2: Convert to fraction form
    1,382,910,721.13/1,907,210,713.37 = 980,227,984.72/x
  3. Step 3: Cross multiply
    1,382,910,721.13x = 1,907,210,713.37 × 980,227,984.72
  4. Step 4: Simplify right side
    1,382,910,721.13x = 1,869,501,314,000,551,680
  5. Step 5: Solve for x
    x = 1,869,501,314,000,551,680/1,382,910,721.13
  6. Step 6: Final answer
    x = 1,351,859,729.94

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1.5x scale

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.