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Finding the Fourth Proportional to 621,549.15, 857,494.96 and 349,554.69

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Solution

The fourth proportional to 621,549.15, 857,494.96 and 349,554.69 is: 482,248.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,549.15 : 857,494.96 = 349,554.69 : x
  2. Step 2: Convert to fraction form
    621,549.15/857,494.96 = 349,554.69/x
  3. Step 3: Cross multiply
    621,549.15x = 857,494.96 × 349,554.69
  4. Step 4: Simplify right side
    621,549.15x = 299,741,384,045.48
  5. Step 5: Solve for x
    x = 299,741,384,045.48/621,549.15
  6. Step 6: Final answer
    x = 482,248.89

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Double scale
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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.