Home / 520,137.12-780,312.63-235,691.04

Finding the Fourth Proportional to 520,137.12, 780,312.63 and 235,691.04

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Solution

The fourth proportional to 520,137.12, 780,312.63 and 235,691.04 is: 353,585.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,137.12 : 780,312.63 = 235,691.04 : x
  2. Step 2: Convert to fraction form
    520,137.12/780,312.63 = 235,691.04/x
  3. Step 3: Cross multiply
    520,137.12x = 780,312.63 × 235,691.04
  4. Step 4: Simplify right side
    520,137.12x = 183,912,695,289.84
  5. Step 5: Solve for x
    x = 183,912,695,289.84/520,137.12
  6. Step 6: Final answer
    x = 353,585.02

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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.