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Finding the Fourth Proportional to 666,117.59, 919,219.52 and 379,729.94

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Solution

The fourth proportional to 666,117.59, 919,219.52 and 379,729.94 is: 524,014.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,117.59 : 919,219.52 = 379,729.94 : x
  2. Step 2: Convert to fraction form
    666,117.59/919,219.52 = 379,729.94/x
  3. Step 3: Cross multiply
    666,117.59x = 919,219.52 × 379,729.94
  4. Step 4: Simplify right side
    666,117.59x = 349,055,169,529.66
  5. Step 5: Solve for x
    x = 349,055,169,529.66/666,117.59
  6. Step 6: Final answer
    x = 524,014.34

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1.5x scale

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.