Home / 658,120.25-986,455.84-430,321.92

Finding the Fourth Proportional to 658,120.25, 986,455.84 and 430,321.92

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Solution

The fourth proportional to 658,120.25, 986,455.84 and 430,321.92 is: 645,009.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,120.25 : 986,455.84 = 430,321.92 : x
  2. Step 2: Convert to fraction form
    658,120.25/986,455.84 = 430,321.92/x
  3. Step 3: Cross multiply
    658,120.25x = 986,455.84 × 430,321.92
  4. Step 4: Simplify right side
    658,120.25x = 424,493,572,880.56
  5. Step 5: Solve for x
    x = 424,493,572,880.56/658,120.25
  6. Step 6: Final answer
    x = 645,009.14

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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.