Home / 957,448,449.12-1,321,338,071.40-528,283,640.76

Finding the Fourth Proportional to 957,448,449.12, 1,321,338,071.40 and 528,283,640.76

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Solution

The fourth proportional to 957,448,449.12, 1,321,338,071.40 and 528,283,640.76 is: 729,064,094.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    957,448,449.12 : 1,321,338,071.40 = 528,283,640.76 : x
  2. Step 2: Convert to fraction form
    957,448,449.12/1,321,338,071.40 = 528,283,640.76/x
  3. Step 3: Cross multiply
    957,448,449.12x = 1,321,338,071.40 × 528,283,640.76
  4. Step 4: Simplify right side
    957,448,449.12x = 698,041,287,033,988,864
  5. Step 5: Solve for x
    x = 698,041,287,033,988,864/957,448,449.12
  6. Step 6: Final answer
    x = 729,064,094.97

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Double scale
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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.