Home / 919,317.67-1,378,976.50-288,280.69

Finding the Fourth Proportional to 919,317.67, 1,378,976.50 and 288,280.69

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Solution

The fourth proportional to 919,317.67, 1,378,976.50 and 288,280.69 is: 432,421.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,317.67 : 1,378,976.50 = 288,280.69 : x
  2. Step 2: Convert to fraction form
    919,317.67/1,378,976.50 = 288,280.69/x
  3. Step 3: Cross multiply
    919,317.67x = 1,378,976.50 × 288,280.69
  4. Step 4: Simplify right side
    919,317.67x = 397,532,293,826.70
  5. Step 5: Solve for x
    x = 397,532,293,826.70/919,317.67
  6. Step 6: Final answer
    x = 432,421.03

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Similar ratio
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1.5x scale

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.