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Finding the Fourth Proportional to 604,490.40, 905,698.80 and 288,266.40

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Solution

The fourth proportional to 604,490.40, 905,698.80 and 288,266.40 is: 431,905.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,490.40 : 905,698.80 = 288,266.40 : x
  2. Step 2: Convert to fraction form
    604,490.40/905,698.80 = 288,266.40/x
  3. Step 3: Cross multiply
    604,490.40x = 905,698.80 × 288,266.40
  4. Step 4: Simplify right side
    604,490.40x = 261,082,532,560.32
  5. Step 5: Solve for x
    x = 261,082,532,560.32/604,490.40
  6. Step 6: Final answer
    x = 431,905.18

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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.