Home / 538,209.65-742,678.20-308,785.83

Finding the Fourth Proportional to 538,209.65, 742,678.20 and 308,785.83

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Solution

The fourth proportional to 538,209.65, 742,678.20 and 308,785.83 is: 426,095.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,209.65 : 742,678.20 = 308,785.83 : x
  2. Step 2: Convert to fraction form
    538,209.65/742,678.20 = 308,785.83/x
  3. Step 3: Cross multiply
    538,209.65x = 742,678.20 × 308,785.83
  4. Step 4: Simplify right side
    538,209.65x = 229,328,508,149.51
  5. Step 5: Solve for x
    x = 229,328,508,149.51/538,209.65
  6. Step 6: Final answer
    x = 426,095.12

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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.