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Finding the Fourth Proportional to 450,962.91, 622,029.78 and 290,021.58

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Solution

The fourth proportional to 450,962.91, 622,029.78 and 290,021.58 is: 400,037.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,962.91 : 622,029.78 = 290,021.58 : x
  2. Step 2: Convert to fraction form
    450,962.91/622,029.78 = 290,021.58/x
  3. Step 3: Cross multiply
    450,962.91x = 622,029.78 × 290,021.58
  4. Step 4: Simplify right side
    450,962.91x = 180,402,059,602.65
  5. Step 5: Solve for x
    x = 180,402,059,602.65/450,962.91
  6. Step 6: Final answer
    x = 400,037.47

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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.