Home / 921,455.23-1,272,256.59-646,397.86

Finding the Fourth Proportional to 921,455.23, 1,272,256.59 and 646,397.86

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Solution

The fourth proportional to 921,455.23, 1,272,256.59 and 646,397.86 is: 892,483.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,455.23 : 1,272,256.59 = 646,397.86 : x
  2. Step 2: Convert to fraction form
    921,455.23/1,272,256.59 = 646,397.86/x
  3. Step 3: Cross multiply
    921,455.23x = 1,272,256.59 × 646,397.86
  4. Step 4: Simplify right side
    921,455.23x = 822,383,937,146.90
  5. Step 5: Solve for x
    x = 822,383,937,146.90/921,455.23
  6. Step 6: Final answer
    x = 892,483.88

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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.