Home / 1,118,880.30-1,678,320.45-320,187.90

Finding the Fourth Proportional to 1,118,880.30, 1,678,320.45 and 320,187.90

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Solution

The fourth proportional to 1,118,880.30, 1,678,320.45 and 320,187.90 is: 480,281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,880.30 : 1,678,320.45 = 320,187.90 : x
  2. Step 2: Convert to fraction form
    1,118,880.30/1,678,320.45 = 320,187.90/x
  3. Step 3: Cross multiply
    1,118,880.30x = 1,678,320.45 × 320,187.90
  4. Step 4: Simplify right side
    1,118,880.30x = 537,377,900,412.56
  5. Step 5: Solve for x
    x = 537,377,900,412.56/1,118,880.30
  6. Step 6: Final answer
    x = 480,281.85

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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.