Home / 1,438,311.40-2,159,022.30-808,455.40

Finding the Fourth Proportional to 1,438,311.40, 2,159,022.30 and 808,455.40

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Solution

The fourth proportional to 1,438,311.40, 2,159,022.30 and 808,455.40 is: 1,213,557.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,311.40 : 2,159,022.30 = 808,455.40 : x
  2. Step 2: Convert to fraction form
    1,438,311.40/2,159,022.30 = 808,455.40/x
  3. Step 3: Cross multiply
    1,438,311.40x = 2,159,022.30 × 808,455.40
  4. Step 4: Simplify right side
    1,438,311.40x = 1,745,473,237,155.42
  5. Step 5: Solve for x
    x = 1,745,473,237,155.42/1,438,311.40
  6. Step 6: Final answer
    x = 1,213,557.26

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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.