Home / 851,312.88-1,174,811.40-488,760.12

Finding the Fourth Proportional to 851,312.88, 1,174,811.40 and 488,760.12

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Solution

The fourth proportional to 851,312.88, 1,174,811.40 and 488,760.12 is: 674,488.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,312.88 : 1,174,811.40 = 488,760.12 : x
  2. Step 2: Convert to fraction form
    851,312.88/1,174,811.40 = 488,760.12/x
  3. Step 3: Cross multiply
    851,312.88x = 1,174,811.40 × 488,760.12
  4. Step 4: Simplify right side
    851,312.88x = 574,200,960,841.37
  5. Step 5: Solve for x
    x = 574,200,960,841.37/851,312.88
  6. Step 6: Final answer
    x = 674,488.75

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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.