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Finding the Fourth Proportional to 668,460.67, 922,477.25 and 381,980.07

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Solution

The fourth proportional to 668,460.67, 922,477.25 and 381,980.07 is: 527,133.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,460.67 : 922,477.25 = 381,980.07 : x
  2. Step 2: Convert to fraction form
    668,460.67/922,477.25 = 381,980.07/x
  3. Step 3: Cross multiply
    668,460.67x = 922,477.25 × 381,980.07
  4. Step 4: Simplify right side
    668,460.67x = 352,367,924,528.41
  5. Step 5: Solve for x
    x = 352,367,924,528.41/668,460.67
  6. Step 6: Final answer
    x = 527,133.37

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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.