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Finding the Fourth Proportional to 504,071.68, 695,719.36 and 289,356.80

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Solution

The fourth proportional to 504,071.68, 695,719.36 and 289,356.80 is: 399,370.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,071.68 : 695,719.36 = 289,356.80 : x
  2. Step 2: Convert to fraction form
    504,071.68/695,719.36 = 289,356.80/x
  3. Step 3: Cross multiply
    504,071.68x = 695,719.36 × 289,356.80
  4. Step 4: Simplify right side
    504,071.68x = 201,311,127,707.65
  5. Step 5: Solve for x
    x = 201,311,127,707.65/504,071.68
  6. Step 6: Final answer
    x = 399,370.04

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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.