Home / 678,538.60-1,017,807.90-346,071.40

Finding the Fourth Proportional to 678,538.60, 1,017,807.90 and 346,071.40

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Solution

The fourth proportional to 678,538.60, 1,017,807.90 and 346,071.40 is: 519,107.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,538.60 : 1,017,807.90 = 346,071.40 : x
  2. Step 2: Convert to fraction form
    678,538.60/1,017,807.90 = 346,071.40/x
  3. Step 3: Cross multiply
    678,538.60x = 1,017,807.90 × 346,071.40
  4. Step 4: Simplify right side
    678,538.60x = 352,234,204,884.06
  5. Step 5: Solve for x
    x = 352,234,204,884.06/678,538.60
  6. Step 6: Final answer
    x = 519,107.10

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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.