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Finding the Fourth Proportional to 707,719.65, 976,680.77 and 401,824.49

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Solution

The fourth proportional to 707,719.65, 976,680.77 and 401,824.49 is: 554,533.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,719.65 : 976,680.77 = 401,824.49 : x
  2. Step 2: Convert to fraction form
    707,719.65/976,680.77 = 401,824.49/x
  3. Step 3: Cross multiply
    707,719.65x = 976,680.77 × 401,824.49
  4. Step 4: Simplify right side
    707,719.65x = 392,454,252,730.64
  5. Step 5: Solve for x
    x = 392,454,252,730.64/707,719.65
  6. Step 6: Final answer
    x = 554,533.50

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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.