Home / 1,287,299.20-1,931,576-529,368.40

Finding the Fourth Proportional to 1,287,299.20, 1,931,576 and 529,368.40

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Solution

The fourth proportional to 1,287,299.20, 1,931,576 and 529,368.40 is: 794,310.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,299.20 : 1,931,576 = 529,368.40 : x
  2. Step 2: Convert to fraction form
    1,287,299.20/1,931,576 = 529,368.40/x
  3. Step 3: Cross multiply
    1,287,299.20x = 1,931,576 × 529,368.40
  4. Step 4: Simplify right side
    1,287,299.20x = 1,022,515,296,598.40
  5. Step 5: Solve for x
    x = 1,022,515,296,598.40/1,287,299.20
  6. Step 6: Final answer
    x = 794,310.52

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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.