Home / 784,893.40-1,177,340.10-385,790.20

Finding the Fourth Proportional to 784,893.40, 1,177,340.10 and 385,790.20

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Solution

The fourth proportional to 784,893.40, 1,177,340.10 and 385,790.20 is: 578,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,893.40 : 1,177,340.10 = 385,790.20 : x
  2. Step 2: Convert to fraction form
    784,893.40/1,177,340.10 = 385,790.20/x
  3. Step 3: Cross multiply
    784,893.40x = 1,177,340.10 × 385,790.20
  4. Step 4: Simplify right side
    784,893.40x = 454,206,272,647.02
  5. Step 5: Solve for x
    x = 454,206,272,647.02/784,893.40
  6. Step 6: Final answer
    x = 578,685.30

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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.