Home / 485,867.94-670,468.86-281,903.06

Finding the Fourth Proportional to 485,867.94, 670,468.86 and 281,903.06

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Solution

The fourth proportional to 485,867.94, 670,468.86 and 281,903.06 is: 389,009.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,867.94 : 670,468.86 = 281,903.06 : x
  2. Step 2: Convert to fraction form
    485,867.94/670,468.86 = 281,903.06/x
  3. Step 3: Cross multiply
    485,867.94x = 670,468.86 × 281,903.06
  4. Step 4: Simplify right side
    485,867.94x = 189,007,223,268.71
  5. Step 5: Solve for x
    x = 189,007,223,268.71/485,867.94
  6. Step 6: Final answer
    x = 389,009.46

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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.