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Finding the Fourth Proportional to 606,948.20, 910,422.30 and 417,991.40

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Solution

The fourth proportional to 606,948.20, 910,422.30 and 417,991.40 is: 626,987.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,948.20 : 910,422.30 = 417,991.40 : x
  2. Step 2: Convert to fraction form
    606,948.20/910,422.30 = 417,991.40/x
  3. Step 3: Cross multiply
    606,948.20x = 910,422.30 × 417,991.40
  4. Step 4: Simplify right side
    606,948.20x = 380,548,691,768.22
  5. Step 5: Solve for x
    x = 380,548,691,768.22/606,948.20
  6. Step 6: Final answer
    x = 626,987.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.