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Finding the Fourth Proportional to 572,756.40, 790,357.55 and 331,054.62

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Solution

The fourth proportional to 572,756.40, 790,357.55 and 331,054.62 is: 456,828.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,756.40 : 790,357.55 = 331,054.62 : x
  2. Step 2: Convert to fraction form
    572,756.40/790,357.55 = 331,054.62/x
  3. Step 3: Cross multiply
    572,756.40x = 790,357.55 × 331,054.62
  4. Step 4: Simplify right side
    572,756.40x = 261,651,516,724.11
  5. Step 5: Solve for x
    x = 261,651,516,724.11/572,756.40
  6. Step 6: Final answer
    x = 456,828.62

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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.