Home / 921,454.23-1,272,255.21-646,396.86

Finding the Fourth Proportional to 921,454.23, 1,272,255.21 and 646,396.86

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Solution

The fourth proportional to 921,454.23, 1,272,255.21 and 646,396.86 is: 892,482.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,454.23 : 1,272,255.21 = 646,396.86 : x
  2. Step 2: Convert to fraction form
    921,454.23/1,272,255.21 = 646,396.86/x
  3. Step 3: Cross multiply
    921,454.23x = 1,272,255.21 × 646,396.86
  4. Step 4: Simplify right side
    921,454.23x = 822,381,772,862.64
  5. Step 5: Solve for x
    x = 822,381,772,862.64/921,454.23
  6. Step 6: Final answer
    x = 892,482.50

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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.