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Finding the Fourth Proportional to 638,205.84, 880,710.72 and 351,718.56

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Solution

The fourth proportional to 638,205.84, 880,710.72 and 351,718.56 is: 485,364.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,205.84 : 880,710.72 = 351,718.56 : x
  2. Step 2: Convert to fraction form
    638,205.84/880,710.72 = 351,718.56/x
  3. Step 3: Cross multiply
    638,205.84x = 880,710.72 × 351,718.56
  4. Step 4: Simplify right side
    638,205.84x = 309,762,306,214.96
  5. Step 5: Solve for x
    x = 309,762,306,214.96/638,205.84
  6. Step 6: Final answer
    x = 485,364.26

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.