Home / 520,014.20-780,021.30-295,287.80

Finding the Fourth Proportional to 520,014.20, 780,021.30 and 295,287.80

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Solution

The fourth proportional to 520,014.20, 780,021.30 and 295,287.80 is: 442,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,014.20 : 780,021.30 = 295,287.80 : x
  2. Step 2: Convert to fraction form
    520,014.20/780,021.30 = 295,287.80/x
  3. Step 3: Cross multiply
    520,014.20x = 780,021.30 × 295,287.80
  4. Step 4: Simplify right side
    520,014.20x = 230,330,773,630.14
  5. Step 5: Solve for x
    x = 230,330,773,630.14/520,014.20
  6. Step 6: Final answer
    x = 442,931.70

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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.