Home / 819,461.72-1,228,435.50-519,033.80

Finding the Fourth Proportional to 819,461.72, 1,228,435.50 and 519,033.80

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Solution

The fourth proportional to 819,461.72, 1,228,435.50 and 519,033.80 is: 778,071.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,461.72 : 1,228,435.50 = 519,033.80 : x
  2. Step 2: Convert to fraction form
    819,461.72/1,228,435.50 = 519,033.80/x
  3. Step 3: Cross multiply
    819,461.72x = 1,228,435.50 × 519,033.80
  4. Step 4: Simplify right side
    819,461.72x = 637,599,545,619.90
  5. Step 5: Solve for x
    x = 637,599,545,619.90/819,461.72
  6. Step 6: Final answer
    x = 778,071.18

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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.