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Finding the Fourth Proportional to 554,999.70, 765,712.62 and 361,318.98

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Solution

The fourth proportional to 554,999.70, 765,712.62 and 361,318.98 is: 498,498.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,999.70 : 765,712.62 = 361,318.98 : x
  2. Step 2: Convert to fraction form
    554,999.70/765,712.62 = 361,318.98/x
  3. Step 3: Cross multiply
    554,999.70x = 765,712.62 × 361,318.98
  4. Step 4: Simplify right side
    554,999.70x = 276,666,502,831.53
  5. Step 5: Solve for x
    x = 276,666,502,831.53/554,999.70
  6. Step 6: Final answer
    x = 498,498.47

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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.