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Finding the Fourth Proportional to 863,999.10, 1,295,998.65 and 508,830.30

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Solution

The fourth proportional to 863,999.10, 1,295,998.65 and 508,830.30 is: 763,245.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,999.10 : 1,295,998.65 = 508,830.30 : x
  2. Step 2: Convert to fraction form
    863,999.10/1,295,998.65 = 508,830.30/x
  3. Step 3: Cross multiply
    863,999.10x = 1,295,998.65 × 508,830.30
  4. Step 4: Simplify right side
    863,999.10x = 659,443,381,879.10
  5. Step 5: Solve for x
    x = 659,443,381,879.10/863,999.10
  6. Step 6: Final answer
    x = 763,245.45

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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.