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Finding the Fourth Proportional to 572,841.36, 790,520.68 and 318,216.24

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Solution

The fourth proportional to 572,841.36, 790,520.68 and 318,216.24 is: 439,138.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,841.36 : 790,520.68 = 318,216.24 : x
  2. Step 2: Convert to fraction form
    572,841.36/790,520.68 = 318,216.24/x
  3. Step 3: Cross multiply
    572,841.36x = 790,520.68 × 318,216.24
  4. Step 4: Simplify right side
    572,841.36x = 251,556,518,431.84
  5. Step 5: Solve for x
    x = 251,556,518,431.84/572,841.36
  6. Step 6: Final answer
    x = 439,138.19

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1.5x scale

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.