Home / 1,355,175.19-2,030,052.63-815,133.21

Finding the Fourth Proportional to 1,355,175.19, 2,030,052.63 and 815,133.21

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Solution

The fourth proportional to 1,355,175.19, 2,030,052.63 and 815,133.21 is: 1,221,069.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,175.19 : 2,030,052.63 = 815,133.21 : x
  2. Step 2: Convert to fraction form
    1,355,175.19/2,030,052.63 = 815,133.21/x
  3. Step 3: Cross multiply
    1,355,175.19x = 2,030,052.63 × 815,133.21
  4. Step 4: Simplify right side
    1,355,175.19x = 1,654,763,316,760.84
  5. Step 5: Solve for x
    x = 1,654,763,316,760.84/1,355,175.19
  6. Step 6: Final answer
    x = 1,221,069.67

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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.