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Finding the Fourth Proportional to 666,712.82, 920,056.67 and 360,782.50

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Solution

The fourth proportional to 666,712.82, 920,056.67 and 360,782.50 is: 497,876.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,712.82 : 920,056.67 = 360,782.50 : x
  2. Step 2: Convert to fraction form
    666,712.82/920,056.67 = 360,782.50/x
  3. Step 3: Cross multiply
    666,712.82x = 920,056.67 × 360,782.50
  4. Step 4: Simplify right side
    666,712.82x = 331,940,344,146.09
  5. Step 5: Solve for x
    x = 331,940,344,146.09/666,712.82
  6. Step 6: Final answer
    x = 497,876.05

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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.