Home / 678,573.60-1,017,860.40-205,591.20

Finding the Fourth Proportional to 678,573.60, 1,017,860.40 and 205,591.20

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Solution

The fourth proportional to 678,573.60, 1,017,860.40 and 205,591.20 is: 308,386.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,573.60 : 1,017,860.40 = 205,591.20 : x
  2. Step 2: Convert to fraction form
    678,573.60/1,017,860.40 = 205,591.20/x
  3. Step 3: Cross multiply
    678,573.60x = 1,017,860.40 × 205,591.20
  4. Step 4: Simplify right side
    678,573.60x = 209,263,141,068.48
  5. Step 5: Solve for x
    x = 209,263,141,068.48/678,573.60
  6. Step 6: Final answer
    x = 308,386.80

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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.