Home / 520,903,122.32-718,819,910.40-309,219,001.28

Finding the Fourth Proportional to 520,903,122.32, 718,819,910.40 and 309,219,001.28

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Solution

The fourth proportional to 520,903,122.32, 718,819,910.40 and 309,219,001.28 is: 426,706,551.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,903,122.32 : 718,819,910.40 = 309,219,001.28 : x
  2. Step 2: Convert to fraction form
    520,903,122.32/718,819,910.40 = 309,219,001.28/x
  3. Step 3: Cross multiply
    520,903,122.32x = 718,819,910.40 × 309,219,001.28
  4. Step 4: Simplify right side
    520,903,122.32x = 222,272,774,794,067,072
  5. Step 5: Solve for x
    x = 222,272,774,794,067,072/520,903,122.32
  6. Step 6: Final answer
    x = 426,706,551.12

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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.