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Finding the Fourth Proportional to 657,811.60, 986,425.80 and 302,642.80

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Solution

The fourth proportional to 657,811.60, 986,425.80 and 302,642.80 is: 453,830.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,811.60 : 986,425.80 = 302,642.80 : x
  2. Step 2: Convert to fraction form
    657,811.60/986,425.80 = 302,642.80/x
  3. Step 3: Cross multiply
    657,811.60x = 986,425.80 × 302,642.80
  4. Step 4: Simplify right side
    657,811.60x = 298,534,666,104.24
  5. Step 5: Solve for x
    x = 298,534,666,104.24/657,811.60
  6. Step 6: Final answer
    x = 453,830.04

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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.