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Finding the Fourth Proportional to 604,409.40, 905,577.30 and 288,185.40

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Solution

The fourth proportional to 604,409.40, 905,577.30 and 288,185.40 is: 431,783.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,409.40 : 905,577.30 = 288,185.40 : x
  2. Step 2: Convert to fraction form
    604,409.40/905,577.30 = 288,185.40/x
  3. Step 3: Cross multiply
    604,409.40x = 905,577.30 × 288,185.40
  4. Step 4: Simplify right side
    604,409.40x = 260,974,156,431.42
  5. Step 5: Solve for x
    x = 260,974,156,431.42/604,409.40
  6. Step 6: Final answer
    x = 431,783.75

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1.5x scale

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.