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Finding the Fourth Proportional to 668,328.30, 922,341.94 and 381,842.24

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Solution

The fourth proportional to 668,328.30, 922,341.94 and 381,842.24 is: 526,970.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,328.30 : 922,341.94 = 381,842.24 : x
  2. Step 2: Convert to fraction form
    668,328.30/922,341.94 = 381,842.24/x
  3. Step 3: Cross multiply
    668,328.30x = 922,341.94 × 381,842.24
  4. Step 4: Simplify right side
    668,328.30x = 352,189,106,849.23
  5. Step 5: Solve for x
    x = 352,189,106,849.23/668,328.30
  6. Step 6: Final answer
    x = 526,970.21

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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.