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Finding the Fourth Proportional to 660,082.96, 910,890.12 and 358,270.48

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Solution

The fourth proportional to 660,082.96, 910,890.12 and 358,270.48 is: 494,400.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,082.96 : 910,890.12 = 358,270.48 : x
  2. Step 2: Convert to fraction form
    660,082.96/910,890.12 = 358,270.48/x
  3. Step 3: Cross multiply
    660,082.96x = 910,890.12 × 358,270.48
  4. Step 4: Simplify right side
    660,082.96x = 326,345,040,519.66
  5. Step 5: Solve for x
    x = 326,345,040,519.66/660,082.96
  6. Step 6: Final answer
    x = 494,400.04

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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.