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Finding the Fourth Proportional to 657,808.60, 986,421.30 and 302,639.80

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Solution

The fourth proportional to 657,808.60, 986,421.30 and 302,639.80 is: 453,825.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,808.60 : 986,421.30 = 302,639.80 : x
  2. Step 2: Convert to fraction form
    657,808.60/986,421.30 = 302,639.80/x
  3. Step 3: Cross multiply
    657,808.60x = 986,421.30 × 302,639.80
  4. Step 4: Simplify right side
    657,808.60x = 298,530,344,947.74
  5. Step 5: Solve for x
    x = 298,530,344,947.74/657,808.60
  6. Step 6: Final answer
    x = 453,825.54

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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.