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Finding the Fourth Proportional to 611,296.40, 917,635.80 and 362,118.80

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Solution

The fourth proportional to 611,296.40, 917,635.80 and 362,118.80 is: 543,587.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,296.40 : 917,635.80 = 362,118.80 : x
  2. Step 2: Convert to fraction form
    611,296.40/917,635.80 = 362,118.80/x
  3. Step 3: Cross multiply
    611,296.40x = 917,635.80 × 362,118.80
  4. Step 4: Simplify right side
    611,296.40x = 332,293,174,733.04
  5. Step 5: Solve for x
    x = 332,293,174,733.04/611,296.40
  6. Step 6: Final answer
    x = 543,587.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.