Home / 526,491-789,818.72-171,421.43

Finding the Fourth Proportional to 526,491, 789,818.72 and 171,421.43

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Solution

The fourth proportional to 526,491, 789,818.72 and 171,421.43 is: 257,158.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,491 : 789,818.72 = 171,421.43 : x
  2. Step 2: Convert to fraction form
    526,491/789,818.72 = 171,421.43/x
  3. Step 3: Cross multiply
    526,491x = 789,818.72 × 171,421.43
  4. Step 4: Simplify right side
    526,491x = 135,391,849,616.97
  5. Step 5: Solve for x
    x = 135,391,849,616.97/526,491
  6. Step 6: Final answer
    x = 257,158.91

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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.