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Finding the Fourth Proportional to 485,781.44, 670,498.58 and 330,988.76

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Solution

The fourth proportional to 485,781.44, 670,498.58 and 330,988.76 is: 456,846.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,781.44 : 670,498.58 = 330,988.76 : x
  2. Step 2: Convert to fraction form
    485,781.44/670,498.58 = 330,988.76/x
  3. Step 3: Cross multiply
    485,781.44x = 670,498.58 × 330,988.76
  4. Step 4: Simplify right side
    485,781.44x = 221,927,493,575.96
  5. Step 5: Solve for x
    x = 221,927,493,575.96/485,781.44
  6. Step 6: Final answer
    x = 456,846.38

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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.