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Finding the Fourth Proportional to 657,807.60, 986,419.80 and 302,638.80

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Solution

The fourth proportional to 657,807.60, 986,419.80 and 302,638.80 is: 453,824.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,807.60 : 986,419.80 = 302,638.80 : x
  2. Step 2: Convert to fraction form
    657,807.60/986,419.80 = 302,638.80/x
  3. Step 3: Cross multiply
    657,807.60x = 986,419.80 × 302,638.80
  4. Step 4: Simplify right side
    657,807.60x = 298,528,904,568.24
  5. Step 5: Solve for x
    x = 298,528,904,568.24/657,807.60
  6. Step 6: Final answer
    x = 453,824.04

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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.