Home / 678,603.60-1,017,905.40-323,787.60

Finding the Fourth Proportional to 678,603.60, 1,017,905.40 and 323,787.60

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Solution

The fourth proportional to 678,603.60, 1,017,905.40 and 323,787.60 is: 485,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,603.60 : 1,017,905.40 = 323,787.60 : x
  2. Step 2: Convert to fraction form
    678,603.60/1,017,905.40 = 323,787.60/x
  3. Step 3: Cross multiply
    678,603.60x = 1,017,905.40 × 323,787.60
  4. Step 4: Simplify right side
    678,603.60x = 329,585,146,493.04
  5. Step 5: Solve for x
    x = 329,585,146,493.04/678,603.60
  6. Step 6: Final answer
    x = 485,681.40

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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.