Home / 478,913.42-660,905.67-261,120.29

Finding the Fourth Proportional to 478,913.42, 660,905.67 and 261,120.29

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Solution

The fourth proportional to 478,913.42, 660,905.67 and 261,120.29 is: 360,348.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,913.42 : 660,905.67 = 261,120.29 : x
  2. Step 2: Convert to fraction form
    478,913.42/660,905.67 = 261,120.29/x
  3. Step 3: Cross multiply
    478,913.42x = 660,905.67 × 261,120.29
  4. Step 4: Simplify right side
    478,913.42x = 172,575,876,908.52
  5. Step 5: Solve for x
    x = 172,575,876,908.52/478,913.42
  6. Step 6: Final answer
    x = 360,348.81

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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.