Home / 812,056.10-1,120,379.78-472,458.74

Finding the Fourth Proportional to 812,056.10, 1,120,379.78 and 472,458.74

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Solution

The fourth proportional to 812,056.10, 1,120,379.78 and 472,458.74 is: 651,843.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,056.10 : 1,120,379.78 = 472,458.74 : x
  2. Step 2: Convert to fraction form
    812,056.10/1,120,379.78 = 472,458.74/x
  3. Step 3: Cross multiply
    812,056.10x = 1,120,379.78 × 472,458.74
  4. Step 4: Simplify right side
    812,056.10x = 529,333,214,759.53
  5. Step 5: Solve for x
    x = 529,333,214,759.53/812,056.10
  6. Step 6: Final answer
    x = 651,843.16

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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.