Home / 456,370.20-684,749.70-288,019.80

Finding the Fourth Proportional to 456,370.20, 684,749.70 and 288,019.80

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Solution

The fourth proportional to 456,370.20, 684,749.70 and 288,019.80 is: 432,152.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,370.20 : 684,749.70 = 288,019.80 : x
  2. Step 2: Convert to fraction form
    456,370.20/684,749.70 = 288,019.80/x
  3. Step 3: Cross multiply
    456,370.20x = 684,749.70 × 288,019.80
  4. Step 4: Simplify right side
    456,370.20x = 197,221,471,644.06
  5. Step 5: Solve for x
    x = 197,221,471,644.06/456,370.20
  6. Step 6: Final answer
    x = 432,152.39

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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.