Home / 629,637.30-868,851.36-343,140.30

Finding the Fourth Proportional to 629,637.30, 868,851.36 and 343,140.30

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Solution

The fourth proportional to 629,637.30, 868,851.36 and 343,140.30 is: 473,507.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,637.30 : 868,851.36 = 343,140.30 : x
  2. Step 2: Convert to fraction form
    629,637.30/868,851.36 = 343,140.30/x
  3. Step 3: Cross multiply
    629,637.30x = 868,851.36 × 343,140.30
  4. Step 4: Simplify right side
    629,637.30x = 298,137,916,325.81
  5. Step 5: Solve for x
    x = 298,137,916,325.81/629,637.30
  6. Step 6: Final answer
    x = 473,507.39

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1.5x scale

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.