Home / 520,730.70-781,088.76-205,190.34

Finding the Fourth Proportional to 520,730.70, 781,088.76 and 205,190.34

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Solution

The fourth proportional to 520,730.70, 781,088.76 and 205,190.34 is: 307,782.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,730.70 : 781,088.76 = 205,190.34 : x
  2. Step 2: Convert to fraction form
    520,730.70/781,088.76 = 205,190.34/x
  3. Step 3: Cross multiply
    520,730.70x = 781,088.76 × 205,190.34
  4. Step 4: Simplify right side
    520,730.70x = 160,271,868,234.58
  5. Step 5: Solve for x
    x = 160,271,868,234.58/520,730.70
  6. Step 6: Final answer
    x = 307,782.64

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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.