Home / 859,640.80-1,186,234.32-515,552.80

Finding the Fourth Proportional to 859,640.80, 1,186,234.32 and 515,552.80

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Solution

The fourth proportional to 859,640.80, 1,186,234.32 and 515,552.80 is: 711,420.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,640.80 : 1,186,234.32 = 515,552.80 : x
  2. Step 2: Convert to fraction form
    859,640.80/1,186,234.32 = 515,552.80/x
  3. Step 3: Cross multiply
    859,640.80x = 1,186,234.32 × 515,552.80
  4. Step 4: Simplify right side
    859,640.80x = 611,566,425,132.10
  5. Step 5: Solve for x
    x = 611,566,425,132.10/859,640.80
  6. Step 6: Final answer
    x = 711,420.89

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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.