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Finding the Fourth Proportional to 478,640.86, 660,528.75 and 263,788.72

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Solution

The fourth proportional to 478,640.86, 660,528.75 and 263,788.72 is: 364,030.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,640.86 : 660,528.75 = 263,788.72 : x
  2. Step 2: Convert to fraction form
    478,640.86/660,528.75 = 263,788.72/x
  3. Step 3: Cross multiply
    478,640.86x = 660,528.75 × 263,788.72
  4. Step 4: Simplify right side
    478,640.86x = 174,240,033,485.70
  5. Step 5: Solve for x
    x = 174,240,033,485.70/478,640.86
  6. Step 6: Final answer
    x = 364,030.84

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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.