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Finding the Fourth Proportional to 879,879.10, 1,214,233.16 and 477,471.10

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Solution

The fourth proportional to 879,879.10, 1,214,233.16 and 477,471.10 is: 658,910.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,879.10 : 1,214,233.16 = 477,471.10 : x
  2. Step 2: Convert to fraction form
    879,879.10/1,214,233.16 = 477,471.10/x
  3. Step 3: Cross multiply
    879,879.10x = 1,214,233.16 × 477,471.10
  4. Step 4: Simplify right side
    879,879.10x = 579,761,242,561.68
  5. Step 5: Solve for x
    x = 579,761,242,561.68/879,879.10
  6. Step 6: Final answer
    x = 658,910.12

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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.