Home / 520,435.13-780,257.10-360,084.79

Finding the Fourth Proportional to 520,435.13, 780,257.10 and 360,084.79

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Solution

The fourth proportional to 520,435.13, 780,257.10 and 360,084.79 is: 539,853.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,435.13 : 780,257.10 = 360,084.79 : x
  2. Step 2: Convert to fraction form
    520,435.13/780,257.10 = 360,084.79/x
  3. Step 3: Cross multiply
    520,435.13x = 780,257.10 × 360,084.79
  4. Step 4: Simplify right side
    520,435.13x = 280,958,716,325.15
  5. Step 5: Solve for x
    x = 280,958,716,325.15/520,435.13
  6. Step 6: Final answer
    x = 539,853.49

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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.