Home / 921,203.20-1,381,804.80-653,514.40

Finding the Fourth Proportional to 921,203.20, 1,381,804.80 and 653,514.40

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Solution

The fourth proportional to 921,203.20, 1,381,804.80 and 653,514.40 is: 980,271.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,203.20 : 1,381,804.80 = 653,514.40 : x
  2. Step 2: Convert to fraction form
    921,203.20/1,381,804.80 = 653,514.40/x
  3. Step 3: Cross multiply
    921,203.20x = 1,381,804.80 × 653,514.40
  4. Step 4: Simplify right side
    921,203.20x = 903,029,334,789.12
  5. Step 5: Solve for x
    x = 903,029,334,789.12/921,203.20
  6. Step 6: Final answer
    x = 980,271.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.