Home / 862,403.70-1,190,102.16-499,861.30

Finding the Fourth Proportional to 862,403.70, 1,190,102.16 and 499,861.30

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Solution

The fourth proportional to 862,403.70, 1,190,102.16 and 499,861.30 is: 689,799.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,403.70 : 1,190,102.16 = 499,861.30 : x
  2. Step 2: Convert to fraction form
    862,403.70/1,190,102.16 = 499,861.30/x
  3. Step 3: Cross multiply
    862,403.70x = 1,190,102.16 × 499,861.30
  4. Step 4: Simplify right side
    862,403.70x = 594,886,012,830.41
  5. Step 5: Solve for x
    x = 594,886,012,830.41/862,403.70
  6. Step 6: Final answer
    x = 689,799.93

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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.