Home / 1,147,677.85-1,721,518.17-428,008.60

Finding the Fourth Proportional to 1,147,677.85, 1,721,518.17 and 428,008.60

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Solution

The fourth proportional to 1,147,677.85, 1,721,518.17 and 428,008.60 is: 642,013.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,677.85 : 1,721,518.17 = 428,008.60 : x
  2. Step 2: Convert to fraction form
    1,147,677.85/1,721,518.17 = 428,008.60/x
  3. Step 3: Cross multiply
    1,147,677.85x = 1,721,518.17 × 428,008.60
  4. Step 4: Simplify right side
    1,147,677.85x = 736,824,581,816.26
  5. Step 5: Solve for x
    x = 736,824,581,816.26/1,147,677.85
  6. Step 6: Final answer
    x = 642,013.42

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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.