Home / 642,130.05-886,735.13-480,704.85

Finding the Fourth Proportional to 642,130.05, 886,735.13 and 480,704.85

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Solution

The fourth proportional to 642,130.05, 886,735.13 and 480,704.85 is: 663,818.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,130.05 : 886,735.13 = 480,704.85 : x
  2. Step 2: Convert to fraction form
    642,130.05/886,735.13 = 480,704.85/x
  3. Step 3: Cross multiply
    642,130.05x = 886,735.13 × 480,704.85
  4. Step 4: Simplify right side
    642,130.05x = 426,257,875,252.86
  5. Step 5: Solve for x
    x = 426,257,875,252.86/642,130.05
  6. Step 6: Final answer
    x = 663,818.61

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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.