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Finding the Fourth Proportional to 640,624.17, 961,290.94 and 383,825.67

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Solution

The fourth proportional to 640,624.17, 961,290.94 and 383,825.67 is: 575,951.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,624.17 : 961,290.94 = 383,825.67 : x
  2. Step 2: Convert to fraction form
    640,624.17/961,290.94 = 383,825.67/x
  3. Step 3: Cross multiply
    640,624.17x = 961,290.94 × 383,825.67
  4. Step 4: Simplify right side
    640,624.17x = 368,968,139,053.69
  5. Step 5: Solve for x
    x = 368,968,139,053.69/640,624.17
  6. Step 6: Final answer
    x = 575,951.02

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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.