Home / 861,389.94-1,188,706.14-479,416.80

Finding the Fourth Proportional to 861,389.94, 1,188,706.14 and 479,416.80

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Solution

The fourth proportional to 861,389.94, 1,188,706.14 and 479,416.80 is: 661,588.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,389.94 : 1,188,706.14 = 479,416.80 : x
  2. Step 2: Convert to fraction form
    861,389.94/1,188,706.14 = 479,416.80/x
  3. Step 3: Cross multiply
    861,389.94x = 1,188,706.14 × 479,416.80
  4. Step 4: Simplify right side
    861,389.94x = 569,885,693,779.15
  5. Step 5: Solve for x
    x = 569,885,693,779.15/861,389.94
  6. Step 6: Final answer
    x = 661,588.52

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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.