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Finding the Fourth Proportional to 570,628.84, 787,467.62 and 315,979.96

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Solution

The fourth proportional to 570,628.84, 787,467.62 and 315,979.96 is: 436,052.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,628.84 : 787,467.62 = 315,979.96 : x
  2. Step 2: Convert to fraction form
    570,628.84/787,467.62 = 315,979.96/x
  3. Step 3: Cross multiply
    570,628.84x = 787,467.62 × 315,979.96
  4. Step 4: Simplify right side
    570,628.84x = 248,823,987,068.90
  5. Step 5: Solve for x
    x = 248,823,987,068.90/570,628.84
  6. Step 6: Final answer
    x = 436,052.25

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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.