Home / 784,266.40-1,177,177.20-385,357.60

Finding the Fourth Proportional to 784,266.40, 1,177,177.20 and 385,357.60

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Solution

The fourth proportional to 784,266.40, 1,177,177.20 and 385,357.60 is: 578,418.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,266.40 : 1,177,177.20 = 385,357.60 : x
  2. Step 2: Convert to fraction form
    784,266.40/1,177,177.20 = 385,357.60/x
  3. Step 3: Cross multiply
    784,266.40x = 1,177,177.20 × 385,357.60
  4. Step 4: Simplify right side
    784,266.40x = 453,634,180,566.72
  5. Step 5: Solve for x
    x = 453,634,180,566.72/784,266.40
  6. Step 6: Final answer
    x = 578,418.48

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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.