Home / 645,102.12-890,350.94-373,335.48

Finding the Fourth Proportional to 645,102.12, 890,350.94 and 373,335.48

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Solution

The fourth proportional to 645,102.12, 890,350.94 and 373,335.48 is: 515,266.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,102.12 : 890,350.94 = 373,335.48 : x
  2. Step 2: Convert to fraction form
    645,102.12/890,350.94 = 373,335.48/x
  3. Step 3: Cross multiply
    645,102.12x = 890,350.94 × 373,335.48
  4. Step 4: Simplify right side
    645,102.12x = 332,399,594,386.68
  5. Step 5: Solve for x
    x = 332,399,594,386.68/645,102.12
  6. Step 6: Final answer
    x = 515,266.63

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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.