Home / 638,986.04-882,090.38-406,508.56

Finding the Fourth Proportional to 638,986.04, 882,090.38 and 406,508.56

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Solution

The fourth proportional to 638,986.04, 882,090.38 and 406,508.56 is: 561,166.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,986.04 : 882,090.38 = 406,508.56 : x
  2. Step 2: Convert to fraction form
    638,986.04/882,090.38 = 406,508.56/x
  3. Step 3: Cross multiply
    638,986.04x = 882,090.38 × 406,508.56
  4. Step 4: Simplify right side
    638,986.04x = 358,577,290,163.65
  5. Step 5: Solve for x
    x = 358,577,290,163.65/638,986.04
  6. Step 6: Final answer
    x = 561,166.08

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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.