Home / 656,855,175.42-906,462,543.60-355,440,488.65

Finding the Fourth Proportional to 656,855,175.42, 906,462,543.60 and 355,440,488.65

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Solution

The fourth proportional to 656,855,175.42, 906,462,543.60 and 355,440,488.65 is: 490,509,173.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,855,175.42 : 906,462,543.60 = 355,440,488.65 : x
  2. Step 2: Convert to fraction form
    656,855,175.42/906,462,543.60 = 355,440,488.65/x
  3. Step 3: Cross multiply
    656,855,175.42x = 906,462,543.60 × 355,440,488.65
  4. Step 4: Simplify right side
    656,855,175.42x = 322,193,489,437,839,744
  5. Step 5: Solve for x
    x = 322,193,489,437,839,744/656,855,175.42
  6. Step 6: Final answer
    x = 490,509,173.86

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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.