Home / 921,435.48-1,272,229.34-646,378.11

Finding the Fourth Proportional to 921,435.48, 1,272,229.34 and 646,378.11

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Solution

The fourth proportional to 921,435.48, 1,272,229.34 and 646,378.11 is: 892,456.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,435.48 : 1,272,229.34 = 646,378.11 : x
  2. Step 2: Convert to fraction form
    921,435.48/1,272,229.34 = 646,378.11/x
  3. Step 3: Cross multiply
    921,435.48x = 1,272,229.34 × 646,378.11
  4. Step 4: Simplify right side
    921,435.48x = 822,341,193,043.86
  5. Step 5: Solve for x
    x = 822,341,193,043.86/921,435.48
  6. Step 6: Final answer
    x = 892,456.62

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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.