Home / 692,870.40-1,039,305.60-425,764.80

Finding the Fourth Proportional to 692,870.40, 1,039,305.60 and 425,764.80

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Solution

The fourth proportional to 692,870.40, 1,039,305.60 and 425,764.80 is: 638,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,870.40 : 1,039,305.60 = 425,764.80 : x
  2. Step 2: Convert to fraction form
    692,870.40/1,039,305.60 = 425,764.80/x
  3. Step 3: Cross multiply
    692,870.40x = 1,039,305.60 × 425,764.80
  4. Step 4: Simplify right side
    692,870.40x = 442,499,740,922.88
  5. Step 5: Solve for x
    x = 442,499,740,922.88/692,870.40
  6. Step 6: Final answer
    x = 638,647.20

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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.