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Finding the Fourth Proportional to 575,784.90, 794,607.21 and 317,660.58

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Solution

The fourth proportional to 575,784.90, 794,607.21 and 317,660.58 is: 438,384.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,784.90 : 794,607.21 = 317,660.58 : x
  2. Step 2: Convert to fraction form
    575,784.90/794,607.21 = 317,660.58/x
  3. Step 3: Cross multiply
    575,784.90x = 794,607.21 × 317,660.58
  4. Step 4: Simplify right side
    575,784.90x = 252,415,387,200.78
  5. Step 5: Solve for x
    x = 252,415,387,200.78/575,784.90
  6. Step 6: Final answer
    x = 438,384.87

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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.