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Finding the Fourth Proportional to 666,214.68, 919,118.02 and 424,453.96

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Solution

The fourth proportional to 666,214.68, 919,118.02 and 424,453.96 is: 585,581.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,214.68 : 919,118.02 = 424,453.96 : x
  2. Step 2: Convert to fraction form
    666,214.68/919,118.02 = 424,453.96/x
  3. Step 3: Cross multiply
    666,214.68x = 919,118.02 × 424,453.96
  4. Step 4: Simplify right side
    666,214.68x = 390,123,283,296.36
  5. Step 5: Solve for x
    x = 390,123,283,296.36/666,214.68
  6. Step 6: Final answer
    x = 585,581.94

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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.