Home / 915,269.88-1,263,012.30-512,784.12

Finding the Fourth Proportional to 915,269.88, 1,263,012.30 and 512,784.12

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Solution

The fourth proportional to 915,269.88, 1,263,012.30 and 512,784.12 is: 707,608.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,269.88 : 1,263,012.30 = 512,784.12 : x
  2. Step 2: Convert to fraction form
    915,269.88/1,263,012.30 = 512,784.12/x
  3. Step 3: Cross multiply
    915,269.88x = 1,263,012.30 × 512,784.12
  4. Step 4: Simplify right side
    915,269.88x = 647,652,650,804.68
  5. Step 5: Solve for x
    x = 647,652,650,804.68/915,269.88
  6. Step 6: Final answer
    x = 707,608.40

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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.