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Finding the Fourth Proportional to 628,570.36, 866,420.04 and 424,557.28

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Solution

The fourth proportional to 628,570.36, 866,420.04 and 424,557.28 is: 585,208.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,570.36 : 866,420.04 = 424,557.28 : x
  2. Step 2: Convert to fraction form
    628,570.36/866,420.04 = 424,557.28/x
  3. Step 3: Cross multiply
    628,570.36x = 866,420.04 × 424,557.28
  4. Step 4: Simplify right side
    628,570.36x = 367,844,935,519.89
  5. Step 5: Solve for x
    x = 367,844,935,519.89/628,570.36
  6. Step 6: Final answer
    x = 585,208.85

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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.