Home / 1,223,905.70-1,688,446.46-815,609.81

Finding the Fourth Proportional to 1,223,905.70, 1,688,446.46 and 815,609.81

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Solution

The fourth proportional to 1,223,905.70, 1,688,446.46 and 815,609.81 is: 1,125,179.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,905.70 : 1,688,446.46 = 815,609.81 : x
  2. Step 2: Convert to fraction form
    1,223,905.70/1,688,446.46 = 815,609.81/x
  3. Step 3: Cross multiply
    1,223,905.70x = 1,688,446.46 × 815,609.81
  4. Step 4: Simplify right side
    1,223,905.70x = 1,377,113,483,915.49
  5. Step 5: Solve for x
    x = 1,377,113,483,915.49/1,223,905.70
  6. Step 6: Final answer
    x = 1,125,179.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.