Home / 520,725.03-718,311.15-302,909.20

Finding the Fourth Proportional to 520,725.03, 718,311.15 and 302,909.20

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Solution

The fourth proportional to 520,725.03, 718,311.15 and 302,909.20 is: 417,846.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,725.03 : 718,311.15 = 302,909.20 : x
  2. Step 2: Convert to fraction form
    520,725.03/718,311.15 = 302,909.20/x
  3. Step 3: Cross multiply
    520,725.03x = 718,311.15 × 302,909.20
  4. Step 4: Simplify right side
    520,725.03x = 217,583,055,797.58
  5. Step 5: Solve for x
    x = 217,583,055,797.58/520,725.03
  6. Step 6: Final answer
    x = 417,846.36

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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.