Home / 679,328.80-1,019,090.40-206,051.20

Finding the Fourth Proportional to 679,328.80, 1,019,090.40 and 206,051.20

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Solution

The fourth proportional to 679,328.80, 1,019,090.40 and 206,051.20 is: 309,106.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,328.80 : 1,019,090.40 = 206,051.20 : x
  2. Step 2: Convert to fraction form
    679,328.80/1,019,090.40 = 206,051.20/x
  3. Step 3: Cross multiply
    679,328.80x = 1,019,090.40 × 206,051.20
  4. Step 4: Simplify right side
    679,328.80x = 209,984,799,828.48
  5. Step 5: Solve for x
    x = 209,984,799,828.48/679,328.80
  6. Step 6: Final answer
    x = 309,106.28

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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.