Home / 1,103,406.20-1,655,109.30-393,457.40

Finding the Fourth Proportional to 1,103,406.20, 1,655,109.30 and 393,457.40

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Solution

The fourth proportional to 1,103,406.20, 1,655,109.30 and 393,457.40 is: 590,186.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103,406.20 : 1,655,109.30 = 393,457.40 : x
  2. Step 2: Convert to fraction form
    1,103,406.20/1,655,109.30 = 393,457.40/x
  3. Step 3: Cross multiply
    1,103,406.20x = 1,655,109.30 × 393,457.40
  4. Step 4: Simplify right side
    1,103,406.20x = 651,215,001,893.82
  5. Step 5: Solve for x
    x = 651,215,001,893.82/1,103,406.20
  6. Step 6: Final answer
    x = 590,186.10

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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.