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Finding the Fourth Proportional to 604,442.40, 905,626.80 and 288,218.40

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Solution

The fourth proportional to 604,442.40, 905,626.80 and 288,218.40 is: 431,833.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,442.40 : 905,626.80 = 288,218.40 : x
  2. Step 2: Convert to fraction form
    604,442.40/905,626.80 = 288,218.40/x
  3. Step 3: Cross multiply
    604,442.40x = 905,626.80 × 288,218.40
  4. Step 4: Simplify right side
    604,442.40x = 261,018,307,293.12
  5. Step 5: Solve for x
    x = 261,018,307,293.12/604,442.40
  6. Step 6: Final answer
    x = 431,833.22

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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.