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Finding the Fourth Proportional to 485,594.37, 670,169.22 and 281,707.65

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Solution

The fourth proportional to 485,594.37, 670,169.22 and 281,707.65 is: 388,784.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,594.37 : 670,169.22 = 281,707.65 : x
  2. Step 2: Convert to fraction form
    485,594.37/670,169.22 = 281,707.65/x
  3. Step 3: Cross multiply
    485,594.37x = 670,169.22 × 281,707.65
  4. Step 4: Simplify right side
    485,594.37x = 188,791,796,068.53
  5. Step 5: Solve for x
    x = 188,791,796,068.53/485,594.37
  6. Step 6: Final answer
    x = 388,784.98

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1.5x scale

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.