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Finding the Fourth Proportional to 478,573.32, 660,431.24 and 277,485.96

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Solution

The fourth proportional to 478,573.32, 660,431.24 and 277,485.96 is: 382,930.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,573.32 : 660,431.24 = 277,485.96 : x
  2. Step 2: Convert to fraction form
    478,573.32/660,431.24 = 277,485.96/x
  3. Step 3: Cross multiply
    478,573.32x = 660,431.24 × 277,485.96
  4. Step 4: Simplify right side
    478,573.32x = 183,260,396,645.39
  5. Step 5: Solve for x
    x = 183,260,396,645.39/478,573.32
  6. Step 6: Final answer
    x = 382,930.66

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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.