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Finding the Fourth Proportional to 485,669.96, 670,647.52 and 304,693

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Solution

The fourth proportional to 485,669.96, 670,647.52 and 304,693 is: 420,741.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,669.96 : 670,647.52 = 304,693 : x
  2. Step 2: Convert to fraction form
    485,669.96/670,647.52 = 304,693/x
  3. Step 3: Cross multiply
    485,669.96x = 670,647.52 × 304,693
  4. Step 4: Simplify right side
    485,669.96x = 204,341,604,811.36
  5. Step 5: Solve for x
    x = 204,341,604,811.36/485,669.96
  6. Step 6: Final answer
    x = 420,741.70

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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.