Home / 947,415.60-1,421,123.40-820,234.80

Finding the Fourth Proportional to 947,415.60, 1,421,123.40 and 820,234.80

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Solution

The fourth proportional to 947,415.60, 1,421,123.40 and 820,234.80 is: 1,230,352.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,415.60 : 1,421,123.40 = 820,234.80 : x
  2. Step 2: Convert to fraction form
    947,415.60/1,421,123.40 = 820,234.80/x
  3. Step 3: Cross multiply
    947,415.60x = 1,421,123.40 × 820,234.80
  4. Step 4: Simplify right side
    947,415.60x = 1,165,654,867,774.32
  5. Step 5: Solve for x
    x = 1,165,654,867,774.32/947,415.60
  6. Step 6: Final answer
    x = 1,230,352.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.