Home / 1,243,123,003.37-1,715,550,347.72-678,637,984.32

Finding the Fourth Proportional to 1,243,123,003.37, 1,715,550,347.72 and 678,637,984.32

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Solution

The fourth proportional to 1,243,123,003.37, 1,715,550,347.72 and 678,637,984.32 is: 936,542,584.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,123,003.37 : 1,715,550,347.72 = 678,637,984.32 : x
  2. Step 2: Convert to fraction form
    1,243,123,003.37/1,715,550,347.72 = 678,637,984.32/x
  3. Step 3: Cross multiply
    1,243,123,003.37x = 1,715,550,347.72 × 678,637,984.32
  4. Step 4: Simplify right side
    1,243,123,003.37x = 1,164,237,629,977,872,640
  5. Step 5: Solve for x
    x = 1,164,237,629,977,872,640/1,243,123,003.37
  6. Step 6: Final answer
    x = 936,542,584.14

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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.