Home / 828,985.80-1,243,478.70-629,920.20

Finding the Fourth Proportional to 828,985.80, 1,243,478.70 and 629,920.20

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Solution

The fourth proportional to 828,985.80, 1,243,478.70 and 629,920.20 is: 944,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,985.80 : 1,243,478.70 = 629,920.20 : x
  2. Step 2: Convert to fraction form
    828,985.80/1,243,478.70 = 629,920.20/x
  3. Step 3: Cross multiply
    828,985.80x = 1,243,478.70 × 629,920.20
  4. Step 4: Simplify right side
    828,985.80x = 783,292,351,399.74
  5. Step 5: Solve for x
    x = 783,292,351,399.74/828,985.80
  6. Step 6: Final answer
    x = 944,880.30

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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.