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Finding the Fourth Proportional to 478,775.10, 660,709.47 and 263,918.76

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Solution

The fourth proportional to 478,775.10, 660,709.47 and 263,918.76 is: 364,207.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,775.10 : 660,709.47 = 263,918.76 : x
  2. Step 2: Convert to fraction form
    478,775.10/660,709.47 = 263,918.76/x
  3. Step 3: Cross multiply
    478,775.10x = 660,709.47 × 263,918.76
  4. Step 4: Simplify right side
    478,775.10x = 174,373,622,554.69
  5. Step 5: Solve for x
    x = 174,373,622,554.69/478,775.10
  6. Step 6: Final answer
    x = 364,207.79

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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.