Home / 693,015.40-1,039,523.10-425,909.80

Finding the Fourth Proportional to 693,015.40, 1,039,523.10 and 425,909.80

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Solution

The fourth proportional to 693,015.40, 1,039,523.10 and 425,909.80 is: 638,864.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,015.40 : 1,039,523.10 = 425,909.80 : x
  2. Step 2: Convert to fraction form
    693,015.40/1,039,523.10 = 425,909.80/x
  3. Step 3: Cross multiply
    693,015.40x = 1,039,523.10 × 425,909.80
  4. Step 4: Simplify right side
    693,015.40x = 442,743,075,616.38
  5. Step 5: Solve for x
    x = 442,743,075,616.38/693,015.40
  6. Step 6: Final answer
    x = 638,864.70

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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.