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Finding the Fourth Proportional to 485,433.87, 728,150.14 and 130,447.90

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Solution

The fourth proportional to 485,433.87, 728,150.14 and 130,447.90 is: 195,671.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,433.87 : 728,150.14 = 130,447.90 : x
  2. Step 2: Convert to fraction form
    485,433.87/728,150.14 = 130,447.90/x
  3. Step 3: Cross multiply
    485,433.87x = 728,150.14 × 130,447.90
  4. Step 4: Simplify right side
    485,433.87x = 94,985,656,647.71
  5. Step 5: Solve for x
    x = 94,985,656,647.71/485,433.87
  6. Step 6: Final answer
    x = 195,671.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.