Home / 1,382,910,724.13-1,907,210,717.51-980,227,987.73

Finding the Fourth Proportional to 1,382,910,724.13, 1,907,210,717.51 and 980,227,987.73

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Solution

The fourth proportional to 1,382,910,724.13, 1,907,210,717.51 and 980,227,987.73 is: 1,351,859,734.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,910,724.13 : 1,907,210,717.51 = 980,227,987.73 : x
  2. Step 2: Convert to fraction form
    1,382,910,724.13/1,907,210,717.51 = 980,227,987.73/x
  3. Step 3: Cross multiply
    1,382,910,724.13x = 1,907,210,717.51 × 980,227,987.73
  4. Step 4: Simplify right side
    1,382,910,724.13x = 1,869,501,323,787,479,808
  5. Step 5: Solve for x
    x = 1,869,501,323,787,479,808/1,382,910,724.13
  6. Step 6: Final answer
    x = 1,351,859,734.09

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Double scale
Find fourth proportional to 1,382,910,725.13, 1,907,210,718.88 and 980,227,988.73
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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.