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Finding the Fourth Proportional to 710,209.22, 980,082.90 and 387,919.52

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Solution

The fourth proportional to 710,209.22, 980,082.90 and 387,919.52 is: 535,325.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,209.22 : 980,082.90 = 387,919.52 : x
  2. Step 2: Convert to fraction form
    710,209.22/980,082.90 = 387,919.52/x
  3. Step 3: Cross multiply
    710,209.22x = 980,082.90 × 387,919.52
  4. Step 4: Simplify right side
    710,209.22x = 380,193,288,128.21
  5. Step 5: Solve for x
    x = 380,193,288,128.21/710,209.22
  6. Step 6: Final answer
    x = 535,325.76

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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.