Home / 1,489,178.70-2,234,691.45-779,715.90

Finding the Fourth Proportional to 1,489,178.70, 2,234,691.45 and 779,715.90

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Solution

The fourth proportional to 1,489,178.70, 2,234,691.45 and 779,715.90 is: 1,170,057.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489,178.70 : 2,234,691.45 = 779,715.90 : x
  2. Step 2: Convert to fraction form
    1,489,178.70/2,234,691.45 = 779,715.90/x
  3. Step 3: Cross multiply
    1,489,178.70x = 2,234,691.45 × 779,715.90
  4. Step 4: Simplify right side
    1,489,178.70x = 1,742,424,455,159.06
  5. Step 5: Solve for x
    x = 1,742,424,455,159.06/1,489,178.70
  6. Step 6: Final answer
    x = 1,170,057.33

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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.