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Finding the Fourth Proportional to 604,981.80, 905,192.61 and 360,920.30

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Solution

The fourth proportional to 604,981.80, 905,192.61 and 360,920.30 is: 540,020.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,981.80 : 905,192.61 = 360,920.30 : x
  2. Step 2: Convert to fraction form
    604,981.80/905,192.61 = 360,920.30/x
  3. Step 3: Cross multiply
    604,981.80x = 905,192.61 × 360,920.30
  4. Step 4: Simplify right side
    604,981.80x = 326,702,383,833.02
  5. Step 5: Solve for x
    x = 326,702,383,833.02/604,981.80
  6. Step 6: Final answer
    x = 540,020.19

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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.