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Finding the Fourth Proportional to 573,670.60, 791,588.64 and 318,972.76

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Solution

The fourth proportional to 573,670.60, 791,588.64 and 318,972.76 is: 440,139.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,670.60 : 791,588.64 = 318,972.76 : x
  2. Step 2: Convert to fraction form
    573,670.60/791,588.64 = 318,972.76/x
  3. Step 3: Cross multiply
    573,670.60x = 791,588.64 × 318,972.76
  4. Step 4: Simplify right side
    573,670.60x = 252,495,213,285.45
  5. Step 5: Solve for x
    x = 252,495,213,285.45/573,670.60
  6. Step 6: Final answer
    x = 440,139.71

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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.