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Finding the Fourth Proportional to 604,511.40, 905,730.30 and 288,287.40

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Solution

The fourth proportional to 604,511.40, 905,730.30 and 288,287.40 is: 431,936.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,511.40 : 905,730.30 = 288,287.40 : x
  2. Step 2: Convert to fraction form
    604,511.40/905,730.30 = 288,287.40/x
  3. Step 3: Cross multiply
    604,511.40x = 905,730.30 × 288,287.40
  4. Step 4: Simplify right side
    604,511.40x = 261,110,633,288.22
  5. Step 5: Solve for x
    x = 261,110,633,288.22/604,511.40
  6. Step 6: Final answer
    x = 431,936.66

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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.