Home / 860,140.88-1,187,149.56-497,514.32

Finding the Fourth Proportional to 860,140.88, 1,187,149.56 and 497,514.32

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Solution

The fourth proportional to 860,140.88, 1,187,149.56 and 497,514.32 is: 686,659.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,140.88 : 1,187,149.56 = 497,514.32 : x
  2. Step 2: Convert to fraction form
    860,140.88/1,187,149.56 = 497,514.32/x
  3. Step 3: Cross multiply
    860,140.88x = 1,187,149.56 × 497,514.32
  4. Step 4: Simplify right side
    860,140.88x = 590,623,906,081.70
  5. Step 5: Solve for x
    x = 590,623,906,081.70/860,140.88
  6. Step 6: Final answer
    x = 686,659.50

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Double scale
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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.