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Finding the Fourth Proportional to 478,865.62, 660,834.48 and 274,929.63

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Solution

The fourth proportional to 478,865.62, 660,834.48 and 274,929.63 is: 379,402.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,865.62 : 660,834.48 = 274,929.63 : x
  2. Step 2: Convert to fraction form
    478,865.62/660,834.48 = 274,929.63/x
  3. Step 3: Cross multiply
    478,865.62x = 660,834.48 × 274,929.63
  4. Step 4: Simplify right side
    478,865.62x = 181,682,979,077.64
  5. Step 5: Solve for x
    x = 181,682,979,077.64/478,865.62
  6. Step 6: Final answer
    x = 379,402.85

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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.