Home / 566,307.36-781,488.40-321,336.72

Finding the Fourth Proportional to 566,307.36, 781,488.40 and 321,336.72

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Solution

The fourth proportional to 566,307.36, 781,488.40 and 321,336.72 is: 443,435.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,307.36 : 781,488.40 = 321,336.72 : x
  2. Step 2: Convert to fraction form
    566,307.36/781,488.40 = 321,336.72/x
  3. Step 3: Cross multiply
    566,307.36x = 781,488.40 × 321,336.72
  4. Step 4: Simplify right side
    566,307.36x = 251,120,919,174.05
  5. Step 5: Solve for x
    x = 251,120,919,174.05/566,307.36
  6. Step 6: Final answer
    x = 443,435.73

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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.