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Finding the Fourth Proportional to 478,643.04, 660,519.28 and 263,778.52

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Solution

The fourth proportional to 478,643.04, 660,519.28 and 263,778.52 is: 364,009.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,643.04 : 660,519.28 = 263,778.52 : x
  2. Step 2: Convert to fraction form
    478,643.04/660,519.28 = 263,778.52/x
  3. Step 3: Cross multiply
    478,643.04x = 660,519.28 × 263,778.52
  4. Step 4: Simplify right side
    478,643.04x = 174,230,798,109.87
  5. Step 5: Solve for x
    x = 174,230,798,109.87/478,643.04
  6. Step 6: Final answer
    x = 364,009.89

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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.