Home / 693,013.40-1,039,520.10-425,907.80

Finding the Fourth Proportional to 693,013.40, 1,039,520.10 and 425,907.80

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Solution

The fourth proportional to 693,013.40, 1,039,520.10 and 425,907.80 is: 638,861.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,013.40 : 1,039,520.10 = 425,907.80 : x
  2. Step 2: Convert to fraction form
    693,013.40/1,039,520.10 = 425,907.80/x
  3. Step 3: Cross multiply
    693,013.40x = 1,039,520.10 × 425,907.80
  4. Step 4: Simplify right side
    693,013.40x = 442,739,718,846.78
  5. Step 5: Solve for x
    x = 442,739,718,846.78/693,013.40
  6. Step 6: Final answer
    x = 638,861.70

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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.