Home / 1,355,195.45-2,030,082.81-815,153.47

Finding the Fourth Proportional to 1,355,195.45, 2,030,082.81 and 815,153.47

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Solution

The fourth proportional to 1,355,195.45, 2,030,082.81 and 815,153.47 is: 1,221,099.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,195.45 : 2,030,082.81 = 815,153.47 : x
  2. Step 2: Convert to fraction form
    1,355,195.45/2,030,082.81 = 815,153.47/x
  3. Step 3: Cross multiply
    1,355,195.45x = 2,030,082.81 × 815,153.47
  4. Step 4: Simplify right side
    1,355,195.45x = 1,654,829,041,883.64
  5. Step 5: Solve for x
    x = 1,654,829,041,883.64/1,355,195.45
  6. Step 6: Final answer
    x = 1,221,099.91

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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.