Home / 421,812.20-633,332.70-297,703.40

Finding the Fourth Proportional to 421,812.20, 633,332.70 and 297,703.40

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Solution

The fourth proportional to 421,812.20, 633,332.70 and 297,703.40 is: 446,988.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,812.20 : 633,332.70 = 297,703.40 : x
  2. Step 2: Convert to fraction form
    421,812.20/633,332.70 = 297,703.40/x
  3. Step 3: Cross multiply
    421,812.20x = 633,332.70 × 297,703.40
  4. Step 4: Simplify right side
    421,812.20x = 188,545,298,121.18
  5. Step 5: Solve for x
    x = 188,545,298,121.18/421,812.20
  6. Step 6: Final answer
    x = 446,988.73

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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.