Home / 693,135.40-1,039,703.10-426,029.80

Finding the Fourth Proportional to 693,135.40, 1,039,703.10 and 426,029.80

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Solution

The fourth proportional to 693,135.40, 1,039,703.10 and 426,029.80 is: 639,044.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,135.40 : 1,039,703.10 = 426,029.80 : x
  2. Step 2: Convert to fraction form
    693,135.40/1,039,703.10 = 426,029.80/x
  3. Step 3: Cross multiply
    693,135.40x = 1,039,703.10 × 426,029.80
  4. Step 4: Simplify right side
    693,135.40x = 442,944,503,752.38
  5. Step 5: Solve for x
    x = 442,944,503,752.38/693,135.40
  6. Step 6: Final answer
    x = 639,044.70

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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.