Home / 456,078.20-684,117.30-288,116.60

Finding the Fourth Proportional to 456,078.20, 684,117.30 and 288,116.60

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Solution

The fourth proportional to 456,078.20, 684,117.30 and 288,116.60 is: 432,174.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,078.20 : 684,117.30 = 288,116.60 : x
  2. Step 2: Convert to fraction form
    456,078.20/684,117.30 = 288,116.60/x
  3. Step 3: Cross multiply
    456,078.20x = 684,117.30 × 288,116.60
  4. Step 4: Simplify right side
    456,078.20x = 197,105,550,477.18
  5. Step 5: Solve for x
    x = 197,105,550,477.18/456,078.20
  6. Step 6: Final answer
    x = 432,174.90

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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.