Home / 1,119,329.40-1,678,498.74-320,428.92

Finding the Fourth Proportional to 1,119,329.40, 1,678,498.74 and 320,428.92

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Solution

The fourth proportional to 1,119,329.40, 1,678,498.74 and 320,428.92 is: 480,501.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,329.40 : 1,678,498.74 = 320,428.92 : x
  2. Step 2: Convert to fraction form
    1,119,329.40/1,678,498.74 = 320,428.92/x
  3. Step 3: Cross multiply
    1,119,329.40x = 1,678,498.74 × 320,428.92
  4. Step 4: Simplify right side
    1,119,329.40x = 537,839,538,479.56
  5. Step 5: Solve for x
    x = 537,839,538,479.56/1,119,329.40
  6. Step 6: Final answer
    x = 480,501.57

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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.