Home / 1,287,289.21-1,931,560.98-529,358.39

Finding the Fourth Proportional to 1,287,289.21, 1,931,560.98 and 529,358.39

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Solution

The fourth proportional to 1,287,289.21, 1,931,560.98 and 529,358.39 is: 794,295.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,289.21 : 1,931,560.98 = 529,358.39 : x
  2. Step 2: Convert to fraction form
    1,287,289.21/1,931,560.98 = 529,358.39/x
  3. Step 3: Cross multiply
    1,287,289.21x = 1,931,560.98 × 529,358.39
  4. Step 4: Simplify right side
    1,287,289.21x = 1,022,488,009,137.72
  5. Step 5: Solve for x
    x = 1,022,488,009,137.72/1,287,289.21
  6. Step 6: Final answer
    x = 794,295.49

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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.