Home / 1,920,150.85-2,880,215.88-782,908.65

Finding the Fourth Proportional to 1,920,150.85, 2,880,215.88 and 782,908.65

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Solution

The fourth proportional to 1,920,150.85, 2,880,215.88 and 782,908.65 is: 1,174,358.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,150.85 : 2,880,215.88 = 782,908.65 : x
  2. Step 2: Convert to fraction form
    1,920,150.85/2,880,215.88 = 782,908.65/x
  3. Step 3: Cross multiply
    1,920,150.85x = 2,880,215.88 × 782,908.65
  4. Step 4: Simplify right side
    1,920,150.85x = 2,254,945,926,319.36
  5. Step 5: Solve for x
    x = 2,254,945,926,319.36/1,920,150.85
  6. Step 6: Final answer
    x = 1,174,358.74

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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.