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Finding the Fourth Proportional to 636,997.74, 879,030.33 and 346,610.43

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Solution

The fourth proportional to 636,997.74, 879,030.33 and 346,610.43 is: 478,307.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,997.74 : 879,030.33 = 346,610.43 : x
  2. Step 2: Convert to fraction form
    636,997.74/879,030.33 = 346,610.43/x
  3. Step 3: Cross multiply
    636,997.74x = 879,030.33 × 346,610.43
  4. Step 4: Simplify right side
    636,997.74x = 304,681,080,664.34
  5. Step 5: Solve for x
    x = 304,681,080,664.34/636,997.74
  6. Step 6: Final answer
    x = 478,307.95

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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.