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Finding the Fourth Proportional to 485,324.49, 669,797.88 and 291,795.51

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Solution

The fourth proportional to 485,324.49, 669,797.88 and 291,795.51 is: 402,707.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,324.49 : 669,797.88 = 291,795.51 : x
  2. Step 2: Convert to fraction form
    485,324.49/669,797.88 = 291,795.51/x
  3. Step 3: Cross multiply
    485,324.49x = 669,797.88 × 291,795.51
  4. Step 4: Simplify right side
    485,324.49x = 195,444,013,991.52
  5. Step 5: Solve for x
    x = 195,444,013,991.52/485,324.49
  6. Step 6: Final answer
    x = 402,707.92

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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.