Home / 784,166.40-1,173,139.20-680,140.80

Finding the Fourth Proportional to 784,166.40, 1,173,139.20 and 680,140.80

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Solution

The fourth proportional to 784,166.40, 1,173,139.20 and 680,140.80 is: 1,017,513.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,166.40 : 1,173,139.20 = 680,140.80 : x
  2. Step 2: Convert to fraction form
    784,166.40/1,173,139.20 = 680,140.80/x
  3. Step 3: Cross multiply
    784,166.40x = 1,173,139.20 × 680,140.80
  4. Step 4: Simplify right side
    784,166.40x = 797,899,833,999.36
  5. Step 5: Solve for x
    x = 797,899,833,999.36/784,166.40
  6. Step 6: Final answer
    x = 1,017,513.42

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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.