Home / 761,609.11-1,051,136.34-486,085.90

Finding the Fourth Proportional to 761,609.11, 1,051,136.34 and 486,085.90

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Solution

The fourth proportional to 761,609.11, 1,051,136.34 and 486,085.90 is: 670,872.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,609.11 : 1,051,136.34 = 486,085.90 : x
  2. Step 2: Convert to fraction form
    761,609.11/1,051,136.34 = 486,085.90/x
  3. Step 3: Cross multiply
    761,609.11x = 1,051,136.34 × 486,085.90
  4. Step 4: Simplify right side
    761,609.11x = 510,942,550,164.30
  5. Step 5: Solve for x
    x = 510,942,550,164.30/761,609.11
  6. Step 6: Final answer
    x = 670,872.43

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.