Home / 440,821.09-608,158.56-287,810.47

Finding the Fourth Proportional to 440,821.09, 608,158.56 and 287,810.47

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Solution

The fourth proportional to 440,821.09, 608,158.56 and 287,810.47 is: 397,064.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,821.09 : 608,158.56 = 287,810.47 : x
  2. Step 2: Convert to fraction form
    440,821.09/608,158.56 = 287,810.47/x
  3. Step 3: Cross multiply
    440,821.09x = 608,158.56 × 287,810.47
  4. Step 4: Simplify right side
    440,821.09x = 175,034,400,988.12
  5. Step 5: Solve for x
    x = 175,034,400,988.12/440,821.09
  6. Step 6: Final answer
    x = 397,064.49

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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.