Home / 665,020.80-997,531.20-384,393.60

Finding the Fourth Proportional to 665,020.80, 997,531.20 and 384,393.60

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Solution

The fourth proportional to 665,020.80, 997,531.20 and 384,393.60 is: 576,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,020.80 : 997,531.20 = 384,393.60 : x
  2. Step 2: Convert to fraction form
    665,020.80/997,531.20 = 384,393.60/x
  3. Step 3: Cross multiply
    665,020.80x = 997,531.20 × 384,393.60
  4. Step 4: Simplify right side
    665,020.80x = 383,444,609,080.32
  5. Step 5: Solve for x
    x = 383,444,609,080.32/665,020.80
  6. Step 6: Final answer
    x = 576,590.40

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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.