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Finding the Fourth Proportional to 570,767.40, 787,670.10 and 329,009.40

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Solution

The fourth proportional to 570,767.40, 787,670.10 and 329,009.40 is: 454,039.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,767.40 : 787,670.10 = 329,009.40 : x
  2. Step 2: Convert to fraction form
    570,767.40/787,670.10 = 329,009.40/x
  3. Step 3: Cross multiply
    570,767.40x = 787,670.10 × 329,009.40
  4. Step 4: Simplify right side
    570,767.40x = 259,150,866,998.94
  5. Step 5: Solve for x
    x = 259,150,866,998.94/570,767.40
  6. Step 6: Final answer
    x = 454,039.36

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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.