Home / 718,979.60-1,078,469.40-707,920.40

Finding the Fourth Proportional to 718,979.60, 1,078,469.40 and 707,920.40

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Solution

The fourth proportional to 718,979.60, 1,078,469.40 and 707,920.40 is: 1,061,880.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,979.60 : 1,078,469.40 = 707,920.40 : x
  2. Step 2: Convert to fraction form
    718,979.60/1,078,469.40 = 707,920.40/x
  3. Step 3: Cross multiply
    718,979.60x = 1,078,469.40 × 707,920.40
  4. Step 4: Simplify right side
    718,979.60x = 763,470,489,035.76
  5. Step 5: Solve for x
    x = 763,470,489,035.76/718,979.60
  6. Step 6: Final answer
    x = 1,061,880.60

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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.