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Finding the Fourth Proportional to 935,350.80, 1,403,285.40 and 620,422.80

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Solution

The fourth proportional to 935,350.80, 1,403,285.40 and 620,422.80 is: 930,806.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,350.80 : 1,403,285.40 = 620,422.80 : x
  2. Step 2: Convert to fraction form
    935,350.80/1,403,285.40 = 620,422.80/x
  3. Step 3: Cross multiply
    935,350.80x = 1,403,285.40 × 620,422.80
  4. Step 4: Simplify right side
    935,350.80x = 870,630,257,067.12
  5. Step 5: Solve for x
    x = 870,630,257,067.12/935,350.80
  6. Step 6: Final answer
    x = 930,806.13

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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.