Home / 638,987.04-882,091.76-406,509.56

Finding the Fourth Proportional to 638,987.04, 882,091.76 and 406,509.56

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Solution

The fourth proportional to 638,987.04, 882,091.76 and 406,509.56 is: 561,167.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,987.04 : 882,091.76 = 406,509.56 : x
  2. Step 2: Convert to fraction form
    638,987.04/882,091.76 = 406,509.56/x
  3. Step 3: Cross multiply
    638,987.04x = 882,091.76 × 406,509.56
  4. Step 4: Simplify right side
    638,987.04x = 358,578,733,237.23
  5. Step 5: Solve for x
    x = 358,578,733,237.23/638,987.04
  6. Step 6: Final answer
    x = 561,167.46

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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.