Home / 862,790.40-1,190,739.80-518,738.88

Finding the Fourth Proportional to 862,790.40, 1,190,739.80 and 518,738.88

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Solution

The fourth proportional to 862,790.40, 1,190,739.80 and 518,738.88 is: 715,913.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,790.40 : 1,190,739.80 = 518,738.88 : x
  2. Step 2: Convert to fraction form
    862,790.40/1,190,739.80 = 518,738.88/x
  3. Step 3: Cross multiply
    862,790.40x = 1,190,739.80 × 518,738.88
  4. Step 4: Simplify right side
    862,790.40x = 617,683,030,223.42
  5. Step 5: Solve for x
    x = 617,683,030,223.42/862,790.40
  6. Step 6: Final answer
    x = 715,913.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.