Home / 623,629.60-935,444.40-387,239.20

Finding the Fourth Proportional to 623,629.60, 935,444.40 and 387,239.20

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Solution

The fourth proportional to 623,629.60, 935,444.40 and 387,239.20 is: 580,858.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,629.60 : 935,444.40 = 387,239.20 : x
  2. Step 2: Convert to fraction form
    623,629.60/935,444.40 = 387,239.20/x
  3. Step 3: Cross multiply
    623,629.60x = 935,444.40 × 387,239.20
  4. Step 4: Simplify right side
    623,629.60x = 362,240,741,100.48
  5. Step 5: Solve for x
    x = 362,240,741,100.48/623,629.60
  6. Step 6: Final answer
    x = 580,858.80

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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.