Home / 829,838.70-1,243,008.45-689,870.70

Finding the Fourth Proportional to 829,838.70, 1,243,008.45 and 689,870.70

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Solution

The fourth proportional to 829,838.70, 1,243,008.45 and 689,870.70 is: 1,033,351.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,838.70 : 1,243,008.45 = 689,870.70 : x
  2. Step 2: Convert to fraction form
    829,838.70/1,243,008.45 = 689,870.70/x
  3. Step 3: Cross multiply
    829,838.70x = 1,243,008.45 × 689,870.70
  4. Step 4: Simplify right side
    829,838.70x = 857,515,109,507.42
  5. Step 5: Solve for x
    x = 857,515,109,507.42/829,838.70
  6. Step 6: Final answer
    x = 1,033,351.55

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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.