Home / 439,205.10-658,807.65-407,712.30

Finding the Fourth Proportional to 439,205.10, 658,807.65 and 407,712.30

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Solution

The fourth proportional to 439,205.10, 658,807.65 and 407,712.30 is: 611,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,205.10 : 658,807.65 = 407,712.30 : x
  2. Step 2: Convert to fraction form
    439,205.10/658,807.65 = 407,712.30/x
  3. Step 3: Cross multiply
    439,205.10x = 658,807.65 × 407,712.30
  4. Step 4: Simplify right side
    439,205.10x = 268,603,982,239.10
  5. Step 5: Solve for x
    x = 268,603,982,239.10/439,205.10
  6. Step 6: Final answer
    x = 611,568.45

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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.