Home / 1,434,805.72-1,980,121.40-790,225.72

Finding the Fourth Proportional to 1,434,805.72, 1,980,121.40 and 790,225.72

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Solution

The fourth proportional to 1,434,805.72, 1,980,121.40 and 790,225.72 is: 1,090,560.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,805.72 : 1,980,121.40 = 790,225.72 : x
  2. Step 2: Convert to fraction form
    1,434,805.72/1,980,121.40 = 790,225.72/x
  3. Step 3: Cross multiply
    1,434,805.72x = 1,980,121.40 × 790,225.72
  4. Step 4: Simplify right side
    1,434,805.72x = 1,564,742,859,002.41
  5. Step 5: Solve for x
    x = 1,564,742,859,002.41/1,434,805.72
  6. Step 6: Final answer
    x = 1,090,560.79

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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.