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Finding the Fourth Proportional to 522,570.56, 721,082.76 and 318,547.76

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Solution

The fourth proportional to 522,570.56, 721,082.76 and 318,547.76 is: 439,556.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,570.56 : 721,082.76 = 318,547.76 : x
  2. Step 2: Convert to fraction form
    522,570.56/721,082.76 = 318,547.76/x
  3. Step 3: Cross multiply
    522,570.56x = 721,082.76 × 318,547.76
  4. Step 4: Simplify right side
    522,570.56x = 229,699,297,972.62
  5. Step 5: Solve for x
    x = 229,699,297,972.62/522,570.56
  6. Step 6: Final answer
    x = 439,556.52

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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.