Home / 450,902.30-621,945.71-289,960.97

Finding the Fourth Proportional to 450,902.30, 621,945.71 and 289,960.97

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Solution

The fourth proportional to 450,902.30, 621,945.71 and 289,960.97 is: 399,953.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,902.30 : 621,945.71 = 289,960.97 : x
  2. Step 2: Convert to fraction form
    450,902.30/621,945.71 = 289,960.97/x
  3. Step 3: Cross multiply
    450,902.30x = 621,945.71 × 289,960.97
  4. Step 4: Simplify right side
    450,902.30x = 180,339,977,886.76
  5. Step 5: Solve for x
    x = 180,339,977,886.76/450,902.30
  6. Step 6: Final answer
    x = 399,953.56

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1.5x scale

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.