Home / 1,078,881.80-1,618,905.90-479,935.40

Finding the Fourth Proportional to 1,078,881.80, 1,618,905.90 and 479,935.40

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Solution

The fourth proportional to 1,078,881.80, 1,618,905.90 and 479,935.40 is: 720,162.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,881.80 : 1,618,905.90 = 479,935.40 : x
  2. Step 2: Convert to fraction form
    1,078,881.80/1,618,905.90 = 479,935.40/x
  3. Step 3: Cross multiply
    1,078,881.80x = 1,618,905.90 × 479,935.40
  4. Step 4: Simplify right side
    1,078,881.80x = 776,970,250,678.86
  5. Step 5: Solve for x
    x = 776,970,250,678.86/1,078,881.80
  6. Step 6: Final answer
    x = 720,162.53

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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.