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Finding the Fourth Proportional to 572,898.48, 790,573.08 and 318,265.20

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Solution

The fourth proportional to 572,898.48, 790,573.08 and 318,265.20 is: 439,191.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,898.48 : 790,573.08 = 318,265.20 : x
  2. Step 2: Convert to fraction form
    572,898.48/790,573.08 = 318,265.20/x
  3. Step 3: Cross multiply
    572,898.48x = 790,573.08 × 318,265.20
  4. Step 4: Simplify right side
    572,898.48x = 251,611,899,420.82
  5. Step 5: Solve for x
    x = 251,611,899,420.82/572,898.48
  6. Step 6: Final answer
    x = 439,191.08

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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.