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Finding the Fourth Proportional to 666,284.50, 919,472.61 and 360,360.91

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Solution

The fourth proportional to 666,284.50, 919,472.61 and 360,360.91 is: 497,298.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,284.50 : 919,472.61 = 360,360.91 : x
  2. Step 2: Convert to fraction form
    666,284.50/919,472.61 = 360,360.91/x
  3. Step 3: Cross multiply
    666,284.50x = 919,472.61 × 360,360.91
  4. Step 4: Simplify right side
    666,284.50x = 331,341,986,459.68
  5. Step 5: Solve for x
    x = 331,341,986,459.68/666,284.50
  6. Step 6: Final answer
    x = 497,298.06

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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.