Home / 656,854,828.20-906,462,065.16-355,440,142.44

Finding the Fourth Proportional to 656,854,828.20, 906,462,065.16 and 355,440,142.44

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Solution

The fourth proportional to 656,854,828.20, 906,462,065.16 and 355,440,142.44 is: 490,508,696.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,854,828.20 : 906,462,065.16 = 355,440,142.44 : x
  2. Step 2: Convert to fraction form
    656,854,828.20/906,462,065.16 = 355,440,142.44/x
  3. Step 3: Cross multiply
    656,854,828.20x = 906,462,065.16 × 355,440,142.44
  4. Step 4: Simplify right side
    656,854,828.20x = 322,193,005,556,926,976
  5. Step 5: Solve for x
    x = 322,193,005,556,926,976/656,854,828.20
  6. Step 6: Final answer
    x = 490,508,696.48

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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.