Home / 885,709.40-1,328,564.10-436,515.80

Finding the Fourth Proportional to 885,709.40, 1,328,564.10 and 436,515.80

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Solution

The fourth proportional to 885,709.40, 1,328,564.10 and 436,515.80 is: 654,773.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,709.40 : 1,328,564.10 = 436,515.80 : x
  2. Step 2: Convert to fraction form
    885,709.40/1,328,564.10 = 436,515.80/x
  3. Step 3: Cross multiply
    885,709.40x = 1,328,564.10 × 436,515.80
  4. Step 4: Simplify right side
    885,709.40x = 579,939,220,962.78
  5. Step 5: Solve for x
    x = 579,939,220,962.78/885,709.40
  6. Step 6: Final answer
    x = 654,773.70

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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.