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Finding the Fourth Proportional to 668,353.68, 922,242.72 and 381,892.32

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Solution

The fourth proportional to 668,353.68, 922,242.72 and 381,892.32 is: 526,962.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,353.68 : 922,242.72 = 381,892.32 : x
  2. Step 2: Convert to fraction form
    668,353.68/922,242.72 = 381,892.32/x
  3. Step 3: Cross multiply
    668,353.68x = 922,242.72 × 381,892.32
  4. Step 4: Simplify right side
    668,353.68x = 352,197,411,943.91
  5. Step 5: Solve for x
    x = 352,197,411,943.91/668,353.68
  6. Step 6: Final answer
    x = 526,962.63

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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.