Home / 420,683.40-629,712.90-302,585.40

Finding the Fourth Proportional to 420,683.40, 629,712.90 and 302,585.40

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Solution

The fourth proportional to 420,683.40, 629,712.90 and 302,585.40 is: 452,934.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,683.40 : 629,712.90 = 302,585.40 : x
  2. Step 2: Convert to fraction form
    420,683.40/629,712.90 = 302,585.40/x
  3. Step 3: Cross multiply
    420,683.40x = 629,712.90 × 302,585.40
  4. Step 4: Simplify right side
    420,683.40x = 190,541,929,731.66
  5. Step 5: Solve for x
    x = 190,541,929,731.66/420,683.40
  6. Step 6: Final answer
    x = 452,934.27

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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.