Home / 935,999.20-1,403,998.80-618,738.40

Finding the Fourth Proportional to 935,999.20, 1,403,998.80 and 618,738.40

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Solution

The fourth proportional to 935,999.20, 1,403,998.80 and 618,738.40 is: 928,107.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,999.20 : 1,403,998.80 = 618,738.40 : x
  2. Step 2: Convert to fraction form
    935,999.20/1,403,998.80 = 618,738.40/x
  3. Step 3: Cross multiply
    935,999.20x = 1,403,998.80 × 618,738.40
  4. Step 4: Simplify right side
    935,999.20x = 868,707,971,113.92
  5. Step 5: Solve for x
    x = 868,707,971,113.92/935,999.20
  6. Step 6: Final answer
    x = 928,107.60

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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.