Home / 442,945.80-611,052.66-289,916.64

Finding the Fourth Proportional to 442,945.80, 611,052.66 and 289,916.64

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Solution

The fourth proportional to 442,945.80, 611,052.66 and 289,916.64 is: 399,945.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,945.80 : 611,052.66 = 289,916.64 : x
  2. Step 2: Convert to fraction form
    442,945.80/611,052.66 = 289,916.64/x
  3. Step 3: Cross multiply
    442,945.80x = 611,052.66 × 289,916.64
  4. Step 4: Simplify right side
    442,945.80x = 177,154,334,050.26
  5. Step 5: Solve for x
    x = 177,154,334,050.26/442,945.80
  6. Step 6: Final answer
    x = 399,945.85

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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.