Home / 672,605,123.40-1,008,907,685.10-412,978,480.20

Finding the Fourth Proportional to 672,605,123.40, 1,008,907,685.10 and 412,978,480.20

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Solution

The fourth proportional to 672,605,123.40, 1,008,907,685.10 and 412,978,480.20 is: 619,467,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,605,123.40 : 1,008,907,685.10 = 412,978,480.20 : x
  2. Step 2: Convert to fraction form
    672,605,123.40/1,008,907,685.10 = 412,978,480.20/x
  3. Step 3: Cross multiply
    672,605,123.40x = 1,008,907,685.10 × 412,978,480.20
  4. Step 4: Simplify right side
    672,605,123.40x = 416,657,162,454,698,176
  5. Step 5: Solve for x
    x = 416,657,162,454,698,176/672,605,123.40
  6. Step 6: Final answer
    x = 619,467,720.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.