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Finding the Fourth Proportional to 666,883.17, 920,298.66 and 360,959.48

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Solution

The fourth proportional to 666,883.17, 920,298.66 and 360,959.48 is: 498,124.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,883.17 : 920,298.66 = 360,959.48 : x
  2. Step 2: Convert to fraction form
    666,883.17/920,298.66 = 360,959.48/x
  3. Step 3: Cross multiply
    666,883.17x = 920,298.66 × 360,959.48
  4. Step 4: Simplify right side
    666,883.17x = 332,190,521,156.80
  5. Step 5: Solve for x
    x = 332,190,521,156.80/666,883.17
  6. Step 6: Final answer
    x = 498,124.01

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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.