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Finding the Fourth Proportional to 547,082.51, 755,099.85 and 320,800.91

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Solution

The fourth proportional to 547,082.51, 755,099.85 and 320,800.91 is: 442,779.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,082.51 : 755,099.85 = 320,800.91 : x
  2. Step 2: Convert to fraction form
    547,082.51/755,099.85 = 320,800.91/x
  3. Step 3: Cross multiply
    547,082.51x = 755,099.85 × 320,800.91
  4. Step 4: Simplify right side
    547,082.51x = 242,236,719,020.86
  5. Step 5: Solve for x
    x = 242,236,719,020.86/547,082.51
  6. Step 6: Final answer
    x = 442,779.13

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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.