Home / 885,703.40-1,328,555.10-353,606.30

Finding the Fourth Proportional to 885,703.40, 1,328,555.10 and 353,606.30

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Solution

The fourth proportional to 885,703.40, 1,328,555.10 and 353,606.30 is: 530,409.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,703.40 : 1,328,555.10 = 353,606.30 : x
  2. Step 2: Convert to fraction form
    885,703.40/1,328,555.10 = 353,606.30/x
  3. Step 3: Cross multiply
    885,703.40x = 1,328,555.10 × 353,606.30
  4. Step 4: Simplify right side
    885,703.40x = 469,785,453,257.13
  5. Step 5: Solve for x
    x = 469,785,453,257.13/885,703.40
  6. Step 6: Final answer
    x = 530,409.45

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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.