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Finding the Fourth Proportional to 617,252.40, 851,886.78 and 345,335.40

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Solution

The fourth proportional to 617,252.40, 851,886.78 and 345,335.40 is: 476,606.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,252.40 : 851,886.78 = 345,335.40 : x
  2. Step 2: Convert to fraction form
    617,252.40/851,886.78 = 345,335.40/x
  3. Step 3: Cross multiply
    617,252.40x = 851,886.78 × 345,335.40
  4. Step 4: Simplify right side
    617,252.40x = 294,186,661,926.01
  5. Step 5: Solve for x
    x = 294,186,661,926.01/617,252.40
  6. Step 6: Final answer
    x = 476,606.75

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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.