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Finding the Fourth Proportional to 478,785.06, 660,710.79 and 263,926.08

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Solution

The fourth proportional to 478,785.06, 660,710.79 and 263,926.08 is: 364,211.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,785.06 : 660,710.79 = 263,926.08 : x
  2. Step 2: Convert to fraction form
    478,785.06/660,710.79 = 263,926.08/x
  3. Step 3: Cross multiply
    478,785.06x = 660,710.79 × 263,926.08
  4. Step 4: Simplify right side
    478,785.06x = 174,378,808,818.40
  5. Step 5: Solve for x
    x = 174,378,808,818.40/478,785.06
  6. Step 6: Final answer
    x = 364,211.05

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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.