Home / 678,808.60-1,017,953.70-205,336.60

Finding the Fourth Proportional to 678,808.60, 1,017,953.70 and 205,336.60

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Solution

The fourth proportional to 678,808.60, 1,017,953.70 and 205,336.60 is: 307,926.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,808.60 : 1,017,953.70 = 205,336.60 : x
  2. Step 2: Convert to fraction form
    678,808.60/1,017,953.70 = 205,336.60/x
  3. Step 3: Cross multiply
    678,808.60x = 1,017,953.70 × 205,336.60
  4. Step 4: Simplify right side
    678,808.60x = 209,023,151,715.42
  5. Step 5: Solve for x
    x = 209,023,151,715.42/678,808.60
  6. Step 6: Final answer
    x = 307,926.49

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Double scale
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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.