Home / 678,463.60-1,017,695.40-205,099.60

Finding the Fourth Proportional to 678,463.60, 1,017,695.40 and 205,099.60

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Solution

The fourth proportional to 678,463.60, 1,017,695.40 and 205,099.60 is: 307,649.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,463.60 : 1,017,695.40 = 205,099.60 : x
  2. Step 2: Convert to fraction form
    678,463.60/1,017,695.40 = 205,099.60/x
  3. Step 3: Cross multiply
    678,463.60x = 1,017,695.40 × 205,099.60
  4. Step 4: Simplify right side
    678,463.60x = 208,728,919,461.84
  5. Step 5: Solve for x
    x = 208,728,919,461.84/678,463.60
  6. Step 6: Final answer
    x = 307,649.40

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Half scale
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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.