Home / 821,607.90-1,232,411.85-260,699.10

Finding the Fourth Proportional to 821,607.90, 1,232,411.85 and 260,699.10

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Solution

The fourth proportional to 821,607.90, 1,232,411.85 and 260,699.10 is: 391,048.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,607.90 : 1,232,411.85 = 260,699.10 : x
  2. Step 2: Convert to fraction form
    821,607.90/1,232,411.85 = 260,699.10/x
  3. Step 3: Cross multiply
    821,607.90x = 1,232,411.85 × 260,699.10
  4. Step 4: Simplify right side
    821,607.90x = 321,288,660,124.34
  5. Step 5: Solve for x
    x = 321,288,660,124.34/821,607.90
  6. Step 6: Final answer
    x = 391,048.65

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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.