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Finding the Fourth Proportional to 642,364.78, 886,879.36 and 413,025.06

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Solution

The fourth proportional to 642,364.78, 886,879.36 and 413,025.06 is: 570,242.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,364.78 : 886,879.36 = 413,025.06 : x
  2. Step 2: Convert to fraction form
    642,364.78/886,879.36 = 413,025.06/x
  3. Step 3: Cross multiply
    642,364.78x = 886,879.36 × 413,025.06
  4. Step 4: Simplify right side
    642,364.78x = 366,303,400,876.76
  5. Step 5: Solve for x
    x = 366,303,400,876.76/642,364.78
  6. Step 6: Final answer
    x = 570,242.04

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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.