Home / 460,432.16-690,124.51-280,120.11

Finding the Fourth Proportional to 460,432.16, 690,124.51 and 280,120.11

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Solution

The fourth proportional to 460,432.16, 690,124.51 and 280,120.11 is: 419,861.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,432.16 : 690,124.51 = 280,120.11 : x
  2. Step 2: Convert to fraction form
    460,432.16/690,124.51 = 280,120.11/x
  3. Step 3: Cross multiply
    460,432.16x = 690,124.51 × 280,120.11
  4. Step 4: Simplify right side
    460,432.16x = 193,317,756,080.51
  5. Step 5: Solve for x
    x = 193,317,756,080.51/460,432.16
  6. Step 6: Final answer
    x = 419,861.54

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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.