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Finding the Fourth Proportional to 688,359.92, 949,948.60 and 401,892.08

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Solution

The fourth proportional to 688,359.92, 949,948.60 and 401,892.08 is: 554,618.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,359.92 : 949,948.60 = 401,892.08 : x
  2. Step 2: Convert to fraction form
    688,359.92/949,948.60 = 401,892.08/x
  3. Step 3: Cross multiply
    688,359.92x = 949,948.60 × 401,892.08
  4. Step 4: Simplify right side
    688,359.92x = 381,776,818,747.09
  5. Step 5: Solve for x
    x = 381,776,818,747.09/688,359.92
  6. Step 6: Final answer
    x = 554,618.02

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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.