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Finding the Fourth Proportional to 636,701.24, 879,907.86 and 521,798.69

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Solution

The fourth proportional to 636,701.24, 879,907.86 and 521,798.69 is: 721,114.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,701.24 : 879,907.86 = 521,798.69 : x
  2. Step 2: Convert to fraction form
    636,701.24/879,907.86 = 521,798.69/x
  3. Step 3: Cross multiply
    636,701.24x = 879,907.86 × 521,798.69
  4. Step 4: Simplify right side
    636,701.24x = 459,134,770,868.47
  5. Step 5: Solve for x
    x = 459,134,770,868.47/636,701.24
  6. Step 6: Final answer
    x = 721,114.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.