Home / 905,761.60-1,249,632.20-543,302.80

Finding the Fourth Proportional to 905,761.60, 1,249,632.20 and 543,302.80

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Solution

The fourth proportional to 905,761.60, 1,249,632.20 and 543,302.80 is: 749,566.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,761.60 : 1,249,632.20 = 543,302.80 : x
  2. Step 2: Convert to fraction form
    905,761.60/1,249,632.20 = 543,302.80/x
  3. Step 3: Cross multiply
    905,761.60x = 1,249,632.20 × 543,302.80
  4. Step 4: Simplify right side
    905,761.60x = 678,928,673,230.16
  5. Step 5: Solve for x
    x = 678,928,673,230.16/905,761.60
  6. Step 6: Final answer
    x = 749,566.63

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.