Home / 491,884.20-679,113.60-401,455.86

Finding the Fourth Proportional to 491,884.20, 679,113.60 and 401,455.86

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Solution

The fourth proportional to 491,884.20, 679,113.60 and 401,455.86 is: 554,264.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,884.20 : 679,113.60 = 401,455.86 : x
  2. Step 2: Convert to fraction form
    491,884.20/679,113.60 = 401,455.86/x
  3. Step 3: Cross multiply
    491,884.20x = 679,113.60 × 401,455.86
  4. Step 4: Simplify right side
    491,884.20x = 272,634,134,325.70
  5. Step 5: Solve for x
    x = 272,634,134,325.70/491,884.20
  6. Step 6: Final answer
    x = 554,264.87

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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.