Home / 520,350.12-780,465.55-136,136.06

Finding the Fourth Proportional to 520,350.12, 780,465.55 and 136,136.06

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Solution

The fourth proportional to 520,350.12, 780,465.55 and 136,136.06 is: 204,188.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,350.12 : 780,465.55 = 136,136.06 : x
  2. Step 2: Convert to fraction form
    520,350.12/780,465.55 = 136,136.06/x
  3. Step 3: Cross multiply
    520,350.12x = 780,465.55 × 136,136.06
  4. Step 4: Simplify right side
    520,350.12x = 106,249,504,602.39
  5. Step 5: Solve for x
    x = 106,249,504,602.39/520,350.12
  6. Step 6: Final answer
    x = 204,188.49

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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.