Home / 921,438.96-1,271,151-539,229.12

Finding the Fourth Proportional to 921,438.96, 1,271,151 and 539,229.12

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Solution

The fourth proportional to 921,438.96, 1,271,151 and 539,229.12 is: 743,881.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,438.96 : 1,271,151 = 539,229.12 : x
  2. Step 2: Convert to fraction form
    921,438.96/1,271,151 = 539,229.12/x
  3. Step 3: Cross multiply
    921,438.96x = 1,271,151 × 539,229.12
  4. Step 4: Simplify right side
    921,438.96x = 685,441,635,117.12
  5. Step 5: Solve for x
    x = 685,441,635,117.12/921,438.96
  6. Step 6: Final answer
    x = 743,881.76

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Half scale
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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.