Home / 651,399.20-976,515.60-426,867.20

Finding the Fourth Proportional to 651,399.20, 976,515.60 and 426,867.20

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Solution

The fourth proportional to 651,399.20, 976,515.60 and 426,867.20 is: 639,918.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,399.20 : 976,515.60 = 426,867.20 : x
  2. Step 2: Convert to fraction form
    651,399.20/976,515.60 = 426,867.20/x
  3. Step 3: Cross multiply
    651,399.20x = 976,515.60 × 426,867.20
  4. Step 4: Simplify right side
    651,399.20x = 416,842,479,928.32
  5. Step 5: Solve for x
    x = 416,842,479,928.32/651,399.20
  6. Step 6: Final answer
    x = 639,918.62

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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.