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Finding the Fourth Proportional to 604,401.40, 905,565.30 and 288,177.40

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Solution

The fourth proportional to 604,401.40, 905,565.30 and 288,177.40 is: 431,771.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,401.40 : 905,565.30 = 288,177.40 : x
  2. Step 2: Convert to fraction form
    604,401.40/905,565.30 = 288,177.40/x
  3. Step 3: Cross multiply
    604,401.40x = 905,565.30 × 288,177.40
  4. Step 4: Simplify right side
    604,401.40x = 260,963,453,684.22
  5. Step 5: Solve for x
    x = 260,963,453,684.22/604,401.40
  6. Step 6: Final answer
    x = 431,771.76

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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.