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Finding the Fourth Proportional to 472,879.15, 652,554.42 and 279,349.01

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Solution

The fourth proportional to 472,879.15, 652,554.42 and 279,349.01 is: 385,490.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,879.15 : 652,554.42 = 279,349.01 : x
  2. Step 2: Convert to fraction form
    472,879.15/652,554.42 = 279,349.01/x
  3. Step 3: Cross multiply
    472,879.15x = 652,554.42 × 279,349.01
  4. Step 4: Simplify right side
    472,879.15x = 182,290,429,566.74
  5. Step 5: Solve for x
    x = 182,290,429,566.74/472,879.15
  6. Step 6: Final answer
    x = 385,490.52

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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.