Home / 1,038,520.40-1,557,780.60-439,282.40

Finding the Fourth Proportional to 1,038,520.40, 1,557,780.60 and 439,282.40

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Solution

The fourth proportional to 1,038,520.40, 1,557,780.60 and 439,282.40 is: 658,923.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,520.40 : 1,557,780.60 = 439,282.40 : x
  2. Step 2: Convert to fraction form
    1,038,520.40/1,557,780.60 = 439,282.40/x
  3. Step 3: Cross multiply
    1,038,520.40x = 1,557,780.60 × 439,282.40
  4. Step 4: Simplify right side
    1,038,520.40x = 684,305,600,641.44
  5. Step 5: Solve for x
    x = 684,305,600,641.44/1,038,520.40
  6. Step 6: Final answer
    x = 658,923.60

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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.