Home / 487,629.12-672,984-272,823.60

Finding the Fourth Proportional to 487,629.12, 672,984 and 272,823.60

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Solution

The fourth proportional to 487,629.12, 672,984 and 272,823.60 is: 376,527.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,629.12 : 672,984 = 272,823.60 : x
  2. Step 2: Convert to fraction form
    487,629.12/672,984 = 272,823.60/x
  3. Step 3: Cross multiply
    487,629.12x = 672,984 × 272,823.60
  4. Step 4: Simplify right side
    487,629.12x = 183,605,917,622.40
  5. Step 5: Solve for x
    x = 183,605,917,622.40/487,629.12
  6. Step 6: Final answer
    x = 376,527.80

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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.