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Finding the Fourth Proportional to 478,628.30, 660,511.56 and 263,776.22

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Solution

The fourth proportional to 478,628.30, 660,511.56 and 263,776.22 is: 364,013.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,628.30 : 660,511.56 = 263,776.22 : x
  2. Step 2: Convert to fraction form
    478,628.30/660,511.56 = 263,776.22/x
  3. Step 3: Cross multiply
    478,628.30x = 660,511.56 × 263,776.22
  4. Step 4: Simplify right side
    478,628.30x = 174,227,242,563.10
  5. Step 5: Solve for x
    x = 174,227,242,563.10/478,628.30
  6. Step 6: Final answer
    x = 364,013.67

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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.