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Finding the Fourth Proportional to 657,884.80, 986,859.60 and 342,956.80

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Solution

The fourth proportional to 657,884.80, 986,859.60 and 342,956.80 is: 514,452.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,884.80 : 986,859.60 = 342,956.80 : x
  2. Step 2: Convert to fraction form
    657,884.80/986,859.60 = 342,956.80/x
  3. Step 3: Cross multiply
    657,884.80x = 986,859.60 × 342,956.80
  4. Step 4: Simplify right side
    657,884.80x = 338,450,210,465.28
  5. Step 5: Solve for x
    x = 338,450,210,465.28/657,884.80
  6. Step 6: Final answer
    x = 514,452.09

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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.